一般現(xiàn)在時：表示一般性，經(jīng)常性的動作或一般性事實

　　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.

　　不含有動詞的句子，即含有一般動詞的句子

　　第三人稱單數(shù)及單數(shù)名詞

　　He likes books.

　　She likes him.

　　The dog likes bones.

　　變疑問句在句首加does, 動詞變?yōu)樵��?br />
　　Does he like books?

　　Does she like him?

　　Does the dog like bones?

　　變否定句在主語及動詞之間加doesn’t, 動詞變?yōu)樵��?br />
　　He doesn’t like books.

　　She doesn’t like him.

　　The dog doesn’t like bones.