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The simple present or present simple is a form that combines present tense with "simple" (neither perfect nor progressive) aspect. In the indicative mood it consists of the base form of the verb, or the -s form when the subject is third-person singular (the verb be uses the forms am , is , are ).
The terms perfective and perfect should not be confused. A perfect tense (abbreviated PERF or PRF) is a grammatical form used to describe a past event with present relevance, or a present state resulting from a past situation. For example, "I have put it on the table" implies both that I put the object on the table and that it is still there ...
Apart from what are called the simple present (write, writes) and simple past (wrote), there are also continuous (progressive) forms (am/is/are/was/were writing), perfect forms (have/has/had written, and the perfect continuous have/has/had been writing), future forms (will write, will be writing, will have written, will have been writing), and ...
The perfect can also be combined with another aspect [21] that is marked in English – the progressive (or continuous) aspect. In perfect progressive (or perfect continuous) constructions, the perfect auxiliary (a form of have) is followed by the past participle been (from be, the auxiliary of the progressive aspect), which in turn is followed ...
The present continuous is formed by the present tense form of be and the present participle (-ing form) of the verb. [3] [4] For example, you would write the verb work in the present continuous form by adding the -ing suffix to the verb and placing a present tense form of be (am, are, is) in front of it: [3] I am working. You are working. She ...
The continuous aspect is constructed by using a form of the copula, "to be", together with the present participle (marked with the suffix -ing). [6] It is generally used for actions that are occurring at the time in question, and does not focus on the larger time-scale.
This simple sentence has one independent clause which contains one subject, dog, and one predicate, barked and howled at the cat. This predicate has two verbs, known as a compound predicate: barked and howled. (This should not be confused with a compound sentence.) In the backyard and at the cat are prepositional phrases.
না can be used in all tenses except two: the present perfect and the past perfect. Verbs in the present perfect and the past perfect tenses are negated using the suffix -নি (ni) attached to the simple present verb form; this naturally means that in negative sentences the distinction between the two tenses is lost, since they both use ...