情态动词
1. can / could
a. 表示能力
He can speak a little Japane in addition to English.
Man cannot live without air．
祖国的未来
Can you finish this work tonight?
b. 表示许可
You can(not) have the book.
Can I u your phone?
could也可表示请求，语气更委婉，主要用于疑问句，不可用于肯定句，答语应用can
(即：could不能 贩买用于现在时态的简略答语中)，如：
-
-Could l come to e you tomorrow morning7
--Yes，you can.(否定答语可用No，I'm afraid not．)
Could you plea …?
Could I u your dictionary? --- Yes, you can.
c. 精神病性倾向有时候会
He is a bad-tempered fellow, but sometimes he can be charming.
They can be very valuable.
d. 个人简历格式在否定句和疑问句中表示猜测(can’t不可能)
护士长述职pptSomeone is knocking. Who can it be?
It二趾树懒 can’t be Mr. Li. Becau he is away on business.不可能，肯定不
It 卤猪耳朵需要多长时间can’t have rained last night, for it is dry outside.
小米椒
e. 与possibly 连用; 用于as…as one can
Can/could sb. possibly
Can he possibly come?
What on earth can she possibly mean?
