新概念英语第一册语法总结 —— 时态时态:一般现在时,现在进行时,一般将来时,一般过去时 / 现在完成时,过去进行时,过去完成时,过去将来时 1
一般现在时:表示一般性,常常性的动作或一般性事实
* 含有 be 动词的句子 (He is a teacher
; The girl is very beautiful
;Tim and Jack are students
) ★变疑问句将 be 动词移到句首 (Is he a teacher
; Is the girl very beautiful
; Are Tim and Jack students
) ★变否定句在 be 动词后面加 not (He is not a teacher
;The girl is not very thin
;Tim and Jack are not students
) ★肯定回答与否定回答 (Yes he is
No he is not
Yes she is
No she is not
Yes they are
No they are not
) * 不含 be 有动词的句子,即含有一般动词的句子 第三人称单数与单数名词 (He likes books
;She likes him
;The dog likes bones
) ★变疑问句在句首加 does 动词变为原型 (Does he like books
Does she like him
Does the dog like bones
) ★变否定句在主语与动词之间加 doesn’t 动词变为原型 (He doesn’t like books
She doesn’t like him
The dog doesn’t like bones
) ★肯定回答与否定回答 Yes he does
No he doesn’t