There are twelve tenses in English and each one of them has different verb forms. The biggest problem that students face while using tenses is the inability to conjugate verbs.
The simple past tense Form: Subject + past tense of the verb I worked. She sang. He played. Mother cooked. The simple past tense is used to talk about an action completed in the past. It is often used with adverbs or adverb phrases of past time.
Now read the following sentences: * I write. * I am writing. * I have written. * I have been writing. The verbs in all of these sentences refer to the present time, and are, therefore, said to be in the present tense. In sentence 1, however, the verb simply talks about the action.
Read the following sentences: I write the letter. I wrote the letter yesterday. I will write another letter tomorrow. In sentence 1, the verb write refers to present time. In sentence 2, the verb wrote refers to past time. In sentence 3, the verb will write refers to future time...