情态

动词 用法 例句

can

　与

could 表示能力 Some of us can use the computer now, but we couldn't last year. 表示客观的可能性 It will be sunny in the daytime, but it could rain later on this evening. 表示请求和允许 --- Can I go now?

--- Yes, you can. 表示请求,口语中常用could代替can,使语气更加婉转 Could you wait a few day for the money?

Could you please show me the way to the station? 表示惊异、怀疑、不相信的态度（主要用于否定句、疑问句和惊叹句中） Can this news be true?

It can't be the headmaster. He's gone to Beijing.

How can you be so foolish! 3. will与would的用法

情态

动词 用法 例句

will

与

would 用于表示意志或意愿。Will指现在，would指过去 I will never do that again.

They said that they would help us. 表示请求、建议等，用would比用 will委婉、客气些 Will you please take a message for me?

Would you please pass him the book? 表示习惯性动作，译为"总是""惯于"。Will指现在，would指过去 Fish will die without water.

Every evening, she would sit by the window, deep in thought. 表示预料或猜想 It would be about ten when he left home.

I thought he would have told you about that. 用于否定句中，表示"不肯""不乐意" No matter what I said, he wouldn't listen to me. 4.shall与should的用法

情态

动词 用法 例句