一、時(shí)態(tài)：
    一般現(xiàn)在時(shí)，現(xiàn)在進(jìn)行時(shí)，一般過(guò)去時(shí)，現(xiàn)在完成時(shí)，一般將來(lái)時(shí)，過(guò)去進(jìn)行時(shí)，過(guò)去完成時(shí)，過(guò)去將來(lái)時(shí)
    1. 一般現(xiàn)在時(shí)
    表示一般性，經(jīng)常性的動(dòng)作或一般性事實(shí)。
    1 含有be動(dòng)詞的句子
    He is a teacher.
    The girl is very beautiful.
    Tim and Jack are students.
    ★變疑問(wèn)句將be動(dòng)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(dòng)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be動(dòng)詞的句子，即含有一般動(dòng)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(wèn)句在句首加does, 動(dòng)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(yǔ)及動(dòng)詞之間加doesn’t, 動(dòng)詞變?yōu)樵?，原句中的?dòng)詞不再有第三人稱變化。
    He doesn’t like books.
    She doesn’t like him.
    The dog doesn’t like bones.
    ★肯定回答及否定回答：
    Yes, he does. No, he doesn’t.
    Yes, she does. No, she doesn’t
    Yes, it does. No, it doesn’t.
    注意：第三人稱單數(shù)形式一般在動(dòng)詞后面加S，不要和名詞復(fù)數(shù)混淆，變否定句或疑問(wèn)句時(shí)名詞復(fù)數(shù)沒(méi)有任何變化。
    其他人稱及復(fù)數(shù)名詞
    I want to have a bath.
    We have some meat.
    The students like smart teachers.
    ★變疑問(wèn)句在句首加do
    Do you want to have a bath?
    Do we have any meat?
    Do the students like smart teachers?
    ★變否定句在主語(yǔ)和動(dòng)詞之間加don’t.
    You don’t want to have a bath.
    We don’t have any meat.
    The students don’t like smart teachers.
    ★肯定回答及否定回答
    Yes, I do. No, I don’t.
    Yes, we do. No, we don’t
    Yes, they do. No, they don’t.