5、can和could表示提議和請求
它們常用來提議為某人做某事或請求別人做某事，could更客氣，更
含尊敬的成分，這種用法常見于陳述句和疑問句中
①提議：
Can I carry your bag ?
I could / can do the shopping for you, if you’re tired.
②請求和命令：
Could / Can you help me with this letter?
You can / could start by cleaning the car.
6、情態(tài)動詞will
①預測未來（第一人稱用shall)，或發(fā)布命令
---There’s someone coming up the stairs.
---That’ll be Mary.
You’ll start work at six o’clock.
②自愿與意向
●I will (不用 I shall) 表示自愿做某事，或主動提出做某事，或表達堅定的意圖
---Can somebody help me ?
--- I will.
I’ll break your neck.
●will you常用來提出要求或下命令，或提出請求
Will you come this way, please?
Will you have some more wine ?
●用won’t表示拒絕
No, I won’t !
She won’t open the door.
7、shall
用于第一人稱，表示征求對方的意見(說話人做某事)。
用于第一、第三人稱疑問句中，表示說話人征求對方的意見或向?qū)Ψ秸埵尽?BR> 用于第二、第三人稱，表示說話人給對方的命令、警告、允諾或威脅。
8、常用情態(tài)動詞的回答
①---Must we hand in our plan ?
---Yes, you must. (No, you needn’t.)
②---Need I come ?
---Yes, you must. (No, you needn’t.)
③---May I smoke here ?
---Yes, please. (Certainly. / Yes, you may. )
(No, you mustn’t. / may not. / Please don’t.)
④---Could / Can I offer you some coffee ? (提議)
(---Will / Would you have some coffee ?)
---Yes, please. / Yes, I’d like some ,please. (不用Yes, you can.)
(No, thank you.) (不用No, you can’t.)
⑤---Could / Can / Would / Will you (please) open the door ?(請求)
---Yes, of course (I will). (No, I’m afraid I can’t.)
它們常用來提議為某人做某事或請求別人做某事，could更客氣，更
含尊敬的成分，這種用法常見于陳述句和疑問句中
①提議：
Can I carry your bag ?
I could / can do the shopping for you, if you’re tired.
②請求和命令：
Could / Can you help me with this letter?
You can / could start by cleaning the car.
6、情態(tài)動詞will
①預測未來（第一人稱用shall)，或發(fā)布命令
---There’s someone coming up the stairs.
---That’ll be Mary.
You’ll start work at six o’clock.
②自愿與意向
●I will (不用 I shall) 表示自愿做某事，或主動提出做某事，或表達堅定的意圖
---Can somebody help me ?
--- I will.
I’ll break your neck.
●will you常用來提出要求或下命令，或提出請求
Will you come this way, please?
Will you have some more wine ?
●用won’t表示拒絕
No, I won’t !
She won’t open the door.
7、shall
用于第一人稱，表示征求對方的意見(說話人做某事)。
用于第一、第三人稱疑問句中，表示說話人征求對方的意見或向?qū)Ψ秸埵尽?BR> 用于第二、第三人稱，表示說話人給對方的命令、警告、允諾或威脅。
8、常用情態(tài)動詞的回答
①---Must we hand in our plan ?
---Yes, you must. (No, you needn’t.)
②---Need I come ?
---Yes, you must. (No, you needn’t.)
③---May I smoke here ?
---Yes, please. (Certainly. / Yes, you may. )
(No, you mustn’t. / may not. / Please don’t.)
④---Could / Can I offer you some coffee ? (提議)
(---Will / Would you have some coffee ?)
---Yes, please. / Yes, I’d like some ,please. (不用Yes, you can.)
(No, thank you.) (不用No, you can’t.)
⑤---Could / Can / Would / Will you (please) open the door ?(請求)
---Yes, of course (I will). (No, I’m afraid I can’t.)