English

The indefinite article in English language is 'the'. It is the most frequently used word in English. We use the definite article before noun that is identified or specified. It refers to the people or things, both singular and plural. For example: The book is on the table.

Modal Verbs or Modal Auxiliary Verbs are the helping verbs that help express the mood or attitude of the speaker. Simply put, modal verbs help describe the ability, necessity, permission, possibility, or obligation in a sentence. Modal Verbs are used before the V1 form of a main verb and do not change with the change in subject.

Modal Verbs include will, would, shall, should, can, could, might, need to, ought to, etc.

Yes, a recently concluded or a repeated action can be used in a Present Perfect Continuous Tense. But one must be careful not to use a past event or a universal truth such as sun has been rising in the east everyday, in a Present Perfect Continuous Tense.

The Present Perfect Continuous Tense uses two types of Verb, which are Auxiliary Verb and Action Verb or Dynamic Verb. While Dynamic Verbs may vary, Auxiliary Verb is a compulsory verb used in this tense. In general, Stative Verbs are generally not used in Present Perfect Continuous Tense.

There are mainly three types of Present Perfect Continuous Tense, which are as follows:

·       Positive or Affirmative

·       Negative

·       Interrogative or Question

The intettogative or question format of Present Perfect Continuous Tense can also be segregated into positive and negative contexts. In the latter type, the formula of the tense would be 'why/how/which/who/whom + have not been + present participle + sentence conclusion'.

The structure or the formula for the Present Perfect Continuous Tense is 'Subject + has/have been + present participle/verb-ing + time expression/sentence conclusion.'

Present Perfect Continuous Tense is one of the types of Present Tense, wherein a continuous action is described which was started before and is either still continuing, or has concluded recently. A Present Perfect Continuous Tense can be identified with the auxiliary verb of 'has/have been', followed by present participle or verb-ing, and a time expression.

Following are the books that students can refer to for simple sentences in English:

These books explain the sentence structure in detail, using numerous examples.