英語中的時態(tài)一共有八種，它們是：一般現(xiàn)在時、現(xiàn)在進行時、一般過去時、現(xiàn)在完成時、一般將來時、過去進行時、過去完成時、過去將來時。

　　今天我們所要講的就是第一種： 一般現(xiàn)在時——表示一般性，經(jīng)常性的動作或一般性事實。

　　1、含有be動詞的句子

　　He is a teacher.

　　The girl is very beautiful.

　　Tim and Jack are students.

　　★變疑問句將be動詞移到句首

　　Is he a teacher?

　　Is the girl very beautiful?

　　Are Tim and Jack students?

　　★變否定句在be動詞后面加not

　　He is not a teacher.

　　The girl is not very beautiful.

　　Tim and Jack are not students.

　　★肯定回答及否定回答

　　Yes, he is. / No, he is not.

　　Yes, she is. / No, she is not.

　　Yes, they are. / No, they are not.