He said he would help me.
他说他会帮助我 。
will, would用于疑问句表示说话人向对方提出请求或询问,用 would 比 will 更婉转,客气 。
It's hot. Will you open the windows?
天气太热了,你能打开窗户吗?
Will you help me to work it out?
你能帮我解这道题吗?
Would you like some coffee？
给你来点咖啡怎样？
Shall, should表示命令,警告,允诺,征求,劝告,建议惊奇 。
You should hand in the exercise book.
你应该交作业本儿了 。
This should be no problem.
这应该没问题 。
Shall we go now.
我们现在可以走了吗?
Why should I meet him？
为什么我要见他?
have to,不得不,必须,表示客观条件只能如此, 而must 则表示主观思想必须 。
I have to go now.
我现在得走了 。
I have to cook for my child.
我得给孩子做饭 。
You must be here on time next time.
你下次一定要按时来 。
We must go to get the timetable ourselves.
我们一定要自己去拿时刻表 。
我把所有的都给你了，希望能对你有帮助
6帮我写一些初中的情态动词情态动词的定义和特点：
1. 情态动词表示说话人的态度和看法，认为可能、应该或必要等，情态动词本身有意义：
e.g. You may have read some account of the matter. （或许）
We can be there on time tomorrow. 我们明天能按时去那儿 。(能力)
May I have your name? 我能知道你的名字吗？ （容许）
Shall we begin now? 我们现在就开始吗？
You must obey the school rules. 你必须遵守校规 。
2. 情态动词后面加动词原形：
e.g. Still, she needn't run away. （他完全没有必要走 。）
3. 情态动词无第三人称和单复数的变化 。
e.g. She dare not say what she thinks.
4. 情态动词是不及物动词，无被动语态 。
5. 过去式用来表达更加客气、委婉的语气 。
e.g. Would you mind very much if I ask you to do something?
你介意不介意我请你做些事情？
6. 时态性不强 。
e.g. She told him he ought not to have done it.
她（当时）告诉他，他不应该做了那些事情 。
7. 倒装：
e.g. Nowhere can he obtain any information about his sister.
8. 省略和替代动词：
e.g. A: Who can solve this crossword puzzle?
B: Tom can.
A: Shall I write to him?
B: Yes, do.
III. Function and Usage功能与运用:
1. ability能够(做或达到)： “can / could / be able to”
1) “can, could” (人或物做主语) ---- (of a person or thing) general ability
e.g. The hall can seat 1,000 people. 这个大厅能坐1 000人 。
He can drive a bus./What can I do for you?
Can you play the piano?
He could play football well when he was 10.
We can't carry the heavy box.
I'm sorry I can't help you.
2) ‘be able to do’（人做主语）– instant ability 具体的、一次性的能力
e.g. I was not tired and able to swim across the river. (instant ability)
I'll not be able to come this afternoon.
2. possibility 能够：（客观可能性）: “may / might / can”
1) “can” expresses “theoretical possibility逻辑上的可能性”；
e.g. He is in poor health. He can be ill at any time.
Can you finish this work tonight?
Man can not live without air.
2) “may” – “possibility” occurs only in statements 不在否定句中用P283
e.g. It may be true. 那可能是真的 。
The road may be blocked. 这条路可能不通了 。
He looks pale. He may be ill.
He said he might be late. 他说他可能会迟到 。
“may” 比 “might” 的可能性要大 。
Note When “may” is used in a question or negative sentence, it has a different meaning.
e.g. “You may not take it.” – “你不可以拿走 。”
“May I take it home？ – “我可不可以把它拿回家？”
3) “might” conveys greater uncertainty in tone than “may” 更加不肯定的语气
e.g. It might rain, and again it might not.天可能下雨，也可能不下雨 。
The soft music might calm your jutters.
柔和的音乐或许能使你紧张的情绪安定下来 。
** may (just) as well / might (just) as well: “不妨做”, “还是…为好”, might 比may 语气更委婉，根据情形选择 。
e.g. Catherine, you may as well come too. 凯瑟琳，你不妨也去 。
If that’s the case, I may as well try. 如果情况如此，我不妨试一试 。
You might just as well tell me the truth. 你还是对我们说实话的好 。
We might just as well get round the table. 我们不防围着桌子坐下 。
3. permission 表示请求和允许：“can / could / may / might / must”
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