Czech grammar, like that of other Slavic languages, is
fusional; its nouns, verbs, and adjectives are
inflected by phonological processes to modify their meanings and grammatical functions, and the easily separable
affixes characteristic of
agglutinative languages are limited. Czech inflects for case, gender and number in nouns and tense, aspect,
mood, person and subject number and gender in verbs. Parts of speech include adjectives,
adverbs, numbers,
interrogative words,
prepositions,
conjunctions and
interjections. Adverbs are primarily formed from adjectives by taking the final
ý or
í of the base form and replacing it with
e,
ě,
y, or
o. Negative statements are formed by adding the affix
ne- to the main verb of a clause, with one exception:
je (he, she or it is) becomes
není.
Sentence and clause structure Because Czech uses
grammatical case to convey word function in a sentence (instead of relying on
word order, as English does), its word order is flexible. As a
pro-drop language, in Czech an
intransitive sentence can consist of only a verb; information about its subject is encoded in the verb. Enclitics (primarily
auxiliary verbs and pronouns) appear in the second syntactic slot of a sentence, after the first stressed unit. The first slot can contain a subject or object, a main form of a verb, an adverb, or a conjunction (except for the light conjunctions
a, "and",
i, "and even" or
ale, "but"). Czech syntax has a
subject–verb–object sentence structure. In practice, however, word order is flexible and used to distinguish
topic and focus, with the topic or theme (known referents) preceding the focus or rheme (new information) in a sentence; Czech has therefore been described as a
topic-prominent language. Although Czech has a
periphrastic passive construction (like English), in colloquial style, word-order changes frequently replace the passive voice. For example, to change "Peter killed Paul" to "Paul was killed by Peter" the order of subject and object is inverted:
Petr zabil Pavla ("Peter killed Paul") becomes "Paul, Peter killed" (
Pavla zabil Petr).
Pavla is in the
accusative case, the grammatical object of the verb. A word at the end of a clause is typically emphasized, unless an upward
intonation indicates that the sentence is a question: •
Pes jí bagetu. – The dog eats the baguette (rather than eating something else). •
Bagetu jí pes. – The dog eats the baguette (rather than someone else doing so). •
Pes bagetu jí. – The dog eats the baguette (rather than doing something else to it). •
Jí pes bagetu? – Does the dog eat the baguette? (emphasis ambiguous) In parts of
Bohemia (including
Prague), questions such as
Jí pes bagetu? without an interrogative word (such as
co, "what" or
kdo, "who") are
intoned in a slow rise from low to high, quickly dropping to low on the last word or phrase. In modern Czech syntax, adjectives precede nouns, with few exceptions.
Relative clauses are introduced by
relativizers such as the adjective
který, analogous to the English
relative pronouns "which", "that" and "who"/"whom". As with other adjectives, it
agrees with its associated noun in gender, number and case. Relative clauses follow the noun they modify. The following is a
glossed example: {{interlinear|indent=3
Declension In Czech, nouns and adjectives are declined into one of seven
grammatical cases which indicate their function in a sentence, two
numbers (singular and plural) and three
genders (masculine, feminine and neuter). The masculine gender is further divided into
animate and inanimate classes.
Case with her name declined in the genitive case in Czech (a sign probably from the time of the
Protectorate) A
nominative–accusative language, Czech marks subject nouns of transitive and intransitive verbs in the nominative case, which is the form found in dictionaries, and
direct objects of transitive verbs are declined in the accusative case. The remaining cases (genitive, dative, locative and instrumental) indicate semantic relationships, such as
noun adjuncts (genitive),
indirect objects (dative), or agents in passive constructions (instrumental). Additionally
prepositions and some verbs require their complements to be declined in a certain case. The locative case is only used after prepositions. An adjective's case agrees with that of the noun it modifies. When Czech children learn their language's declension patterns, the cases are referred to by number: Some prepositions require the nouns they modify to take a particular case. The cases assigned by each preposition are based on the physical (or metaphorical) direction, or location, conveyed by it. For example,
od (from, away from) and
z (out of, off) assign the genitive case. Other prepositions take one of several cases, with their meaning dependent on the case;
na means "on to" or "for" with the accusative case, but "on" with the locative. This is a glossed example of a sentence using several cases: {{interlinear|indent=3|abbreviations=INS:instrumental case
Gender Czech distinguishes three
genders—masculine, feminine, and neuter—and the masculine gender is subdivided into
animate and inanimate. With few exceptions, feminine nouns in the nominative case end in
-a,
-e, or a consonant; neuter nouns in
-o,
-e, or
-í, and masculine nouns in a consonant. Adjectives, participles, most pronouns, and the numbers "one" and "two" are marked for gender and agree with the gender of the noun they modify or refer to. Past tense verbs are also marked for gender, agreeing with the gender of the subject, e.g.
dělal (he did, or made);
dělala (she did, or made) and
dělalo (it did, or made). Gender also plays a semantic role; most nouns that describe people and animals, including personal names, have separate masculine and feminine forms which are normally formed by adding a suffix to the stem, for example
Čech (Czech man) has the feminine form
Češka (Czech woman). Nouns of different genders follow different declension patterns. Examples of declension patterns for noun phrases of various genders follow:
Number Nouns are also inflected for
number, distinguishing between singular and plural. Typical of a Slavic language, Czech cardinal numbers one through four allow the nouns and adjectives they modify to take any case, but numbers over five require subject and direct object noun phrases to be declined in the genitive plural instead of the nominative or accusative, and when used as subjects these phrases take singular verbs. For example: Numbers decline for case, and the numbers one and two are also inflected for gender. Numbers one through five are shown below as examples. The number one has declension patterns identical to those of the
demonstrative pronoun ten. Although Czech's
grammatical numbers are singular and
plural, several residuals of
dual forms remain, such as the words
dva ("two") and
oba ("both"), which decline the same way. Some nouns for paired body parts use a historical dual form to express plural in some cases:
ruka (hand)—
ruce (nominative);
noha (leg)—
nohama (instrumental),
nohou (genitive/locative);
oko (eye)—
oči, and
ucho (ear)—
uši. While two of these nouns are neuter in their singular forms, all plural forms are considered feminine; their gender is relevant to their associated adjectives and verbs. These forms are plural semantically, used for any non-singular count, as in
mezi čtyřma očima (face to face, lit.
among four eyes). The plural number paradigms of these nouns are a mixture of historical dual and plural forms. For example,
nohy (legs; nominative/accusative) is a standard plural form of this type of noun.
Verb conjugation Czech verbs agree with their subjects in
person (first, second or third),
number (singular or plural), and in constructions involving
participles, which includes the past tense, also in
gender. They are conjugated for tense (past, present or
future) and mood (
indicative,
imperative or
conditional). For example, the conjugated verb
mluvíme (we speak) is in the present tense and first-person plural; it is distinguished from other conjugations of the
infinitive mluvit by its ending,
-íme.
Aspect Typical of Slavic languages, Czech marks its verbs for one of two
grammatical aspects:
perfective and
imperfective. Most verbs are part of inflected aspect pairs—for example,
koupit (perfective) and
kupovat (imperfective). Although the verbs' meaning is similar, in perfective verbs the action is completed and in imperfective verbs it is ongoing or repeated. This is distinct from
past and
present tense. Any verb of either aspect can be conjugated into either the past or present tense, but the future tense is only used with imperfective verbs. Aspect describes the state of the action at the time specified by the tense. In suffix pairs, a different infinitive ending is added to the perfective stem; for example, the perfective verbs
koupit (to buy) and
prodat (to sell) have the imperfective forms
kupovat and
prodávat. Imperfective verbs may undergo further morphology to make other imperfective verbs (iterative and
frequentative forms), denoting repeated or regular action. The verb
jít (to go) has the iterative form
chodit (to go regularly) and the frequentative form
chodívat (to go occasionally; to tend to go). Many verbs have only one aspect, and verbs describing continual states of being—
být (to be),
chtít (to want),
moct (to be able to),
ležet (to lie down, to be lying down)—have no perfective form. Conversely, verbs describing immediate states of change—for example,
otěhotnět (to become pregnant) and
nadchnout se (to become enthusiastic)—have no imperfective aspect.
Tense The present tense in Czech is formed by adding an ending that agrees with the person and number of the subject at the end of the verb stem. As Czech is a
null-subject language, the subject pronoun can be omitted unless it is needed for clarity. The past tense is formed using a
participle which ends in
-l and a further ending which agrees with the gender and number of the subject. For the first and second persons, the auxiliary verb
být conjugated in the present tense is added. In some contexts, the present tense of perfective verbs (which differs from the English
present perfect) implies future action; in others, it connotes habitual action. The perfective present is used to refer to completion of actions in the future and is distinguished from the imperfective future tense, which refers to actions that will be ongoing in the future. The future tense is regularly formed using the future conjugation of
být (as shown in the table on the left) and the infinitive of an imperfective verb, for example,
budu jíst—"I will eat" or "I will be eating".
Mood Czech verbs have three
grammatical moods:
indicative,
imperative and
conditional. The imperative mood is formed by adding specific endings for each of three person–number categories:
-Ø/-i/-ej for second-person singular,
-te/-ete/-ejte for second-person plural and
-me/-eme/-ejme for first-person plural. Imperatives are usually expressed using perfective verbs if positive and imperfective verbs if negative. The conditional mood is formed with a conditional
auxiliary verb after the participle ending in -l which is used to form the past tense. This mood indicates hypothetical events and can also be used to express wishes.
Verb classes Most Czech verbs fall into one of five
classes, which determine their conjugation patterns. The future tense of
být would be classified as a Class I verb because of its endings. Examples of the present tense of each class and some common irregular verbs follow in the tables below: ==Orthography==