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情态动词(Modal verbs)本身具有各种意义，可表达说话者的语气和情感。情态动词属于助动词的一种，不能单独使用，需要与动词原形一起构成句子的谓语，另外情态动词没有人称和数的变化，情态动词后必须跟动词原形。情态（助）动词实际上是谓语动词的组成部分，比如 “I could do the paper work for you,if you are too busy”，could do 共同构成谓语。
情态动词是中国英语学习者的难点，有些情态动词可以互换，但又有细微区别，需要学生细心甄别。学习语法之余还需要在生活中多多地运用，进入情境可以帮助孩子真正将语法内化为自己的语言。如果不知道如何在生活中运用，文末会有情态动词的相关游戏，多玩几次，帮助也会很大。
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【限时免费】跟鹅宝宝学语法之名词（Nouns）
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【限时免费】动词说：看我千变万化（Verbs）
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1. Modal Verbs
▲What can you do?
▲Modal verbs
A modal verb is an auxiliary verb that expresses necessity or possibility. English modal verbs include: must, shall, will, should, would, can, could, may, and might.
We use modal verbs to show if we believe something is certain, probable or possible (or not). We also use modals to do things like talking about ability, asking permission， making requests and offers, and so on.
常见情态动词有：must, shall, will, should, would, can, could, may和 might，表示说话人的语气、情感、态度、猜测（可能性），可用于表达能力、许可、义务、可能发生的事情等。
e.g. Tom can write poetry very well.
You may not wear sandals to work.
Shall we go for a walk?
We should remember some important points about the grammatical usage of modal auxiliaries.使用情态动词需要注意:
Modal auxiliaries always go with the main verb. They cannot stand alone. 不能单独使用，只能和主要动词一起构成谓语。
e.g. I used to run 10 miles a day in my
childhood.
She would feel lost whenever she got
into trouble.
Modal auxiliaries don’t undergo changes according to the person and number of the subject(With modal verbs, there is only one form of it for every subject pronoun).没有人称和数的变化。
e.g. I can touch the tree.
We can play the piano.
Mr. Austen can sing Spanish songs.
Could I take this seat,sir, if you don't mind ?
Only the base form of the verb should be used after modal auxiliaries.(A modal verb is followed by an infinitive verb without to)后面跟动词原形
e.g. I think you may drive my car, but be careful.
What do you think I should do with the problem ?
Affirmative form 肯定式Subject + modal verb + infinitive without "to" .
e.g. She can teach you if she likes.
You may use my pen.
We will go for a picnic next week.
I would rather quit than submit to undue pressure.
When I was a child, I could play outside all day.
Negative form 否定式,We just put "not' after the modal verbs to form the negative .
Subject + modal verb+ not + infinitive without "to" .
e.g. You may not use my pen.
We will not go for a picnic next week.
Question form 疑问式
In both positive and negative forms, we can form a question sentence, modal verb is written at the beginning of the positive question sentences, the negative modal verb is written at the beginning of the negative question sentences.
e.g. -Can we go south this summer for vacation?
-Yes, of course you can . / Yes , you can.
-Can’t they drive this car?
-No, they can't .
-Must I leave now ?
-No, you needn't.
2. Top 10 Modal Verbs
CAN & COULD
Can is used when talking about talents, the ability to do a job. Or when we allow someone to do an action or ask permission to perform an action, we use can.
e.g. Jane can speak three languages.
As long as you live here, you can use all my stuff.
You can join the party tonight, not too late. Please be home at 2:00.
Could is used when talking about our past talents,possibilities, and skills that have been going on for a while.
e.g. 20 years ago, when I was young, I couldn’t sleep early.
I could barely walk when I was a baby.
Could you ever excited when you took the exams?
Instead of using can to express our requests and requests in a polite manner, we could use it.
e.g. Could you hand me the pencil?
Could I go to the park?
Could I have my bill, please ?
SHALL & SHOULD
The modal “shall” is used to show simple future, to know the desire of the hearer,show promise, desire , intention or planning, suggestion/proposal and order etc.
e.g. Shall I help you with that ?
Shall I call you on your mobile ?
I shall take part in the tournament next week.
Shall we have some rest now ?
The modal "should" is used to show duty, obligation, advice, suggestion, imagination, desire, opinion, probability and guess.
Should is used as the past form of shall when reporting what sb. has said .
e.g. You should send an email.
You shouldn't go by train.
You should keep your word.
She said that I should not bother her. ( past form of will/shall)
He asked me what time he should come. (His words were : "What time shall I come ")
MAY & MIGHT
May is used in the possibilities that we expect to take place now or in the future, and in sentences that we expressly ask for permission.
e.g. Jane may take me to the hospital .
May I please open the door .
I may take you to work if you want.
There's no chair to sit anywhere, may I sit next to you ?
Might is used to show probability, excessive modesty/humility,guess etc.
e.g. She thought that she might return home in time. (probability)
Might I use your scooter ?(excessive modesty)
She might have finished her breakfast.
In possible sentences,there is no difference in meaning between may and might .
e.g. We may go camping this Saturday.
We might do groceries tomorrow.
However , sentences set up to ask for or allow permission on past issues are used as "might". Or when talkig about wishes about past issues, the phrase might be used .
e.g. The doctor said that I might released when I feel well.
I wished you might passed the exams.
I wished I might go abroad.
WILL & WOULD
1. We use will to express beliefs about the present or future.We use would as the past of will,to describe past beliefs about the future.
e.g. John will be in his office. （present）
We will be late. (future)
We will have to take the train. (future)
I thought we would be late, so we would have to take the train.
2. We use will to talk about what people want to do or are willing to do,to talk about typical behavior, things that we often do (because we are willing to do them):
e.g. We'll see you tomorrow .
Perhaps Dad will lend me the car.
We always spend our holidays at our favourite hotel at the seaside. We'll get up early every morning and have a quick breakfast then we'll go across the road to the beach.
We use would as the past tense of will.To talk about what people wanted to do or were willing to do in the past.
e.g. We had a terrible night. The baby wouldn't go to sleep.Dad wouldn't lend me the car, so we had to take the train.
Would is used to talk about typical behavior, things that we often did (because we were willing to do them) in the past.
e.g. When they were children they used to spend their holidays at their grandmother's at the seaside. They'd get up early every morning and have a quick breakfast. Then they'd run across the road to the beach.
3. We use "I will" or "We will" to make promises and offers.
e.g. I'll give you a lift home after the party.
We'll come and see you next week.
We use Will you … ? or Would you … ? to make requests.
e.g. Would you hand me the pencil ?
Would you help me ?
Will you carry this for me ,please ?
Would you please be quiet?
MUST
The "must" is used to show obligation, compulsion, necessity/compulsion, advice, guess, probability, guess about past activity etc. (We use must to say that is necessary to do something.)
e.g. You must stop at a red light.
Everyone must bring something to eat.
You must wash your hands before you eat.
The negative is must not(mustn't ) which refers to prohibition(negative obligation).
e.g. You mustn't use your smartphone while you are driving.
You mustn't get on the subway if you haven't paid for the ride.
You must not tell anyone.
DARE
As a modal verb dare has two forms:dare for the present and dared for the past. It is used mostly in interrogative and negative sentences. 'Dare' means 'to have the courage to do something'. In negative sentences it denotes lack of courage to do something.
e.g. I daren't tell her the truth.
Dare he say so ?
Dare they speak against you ?
You dare not meet me after school hours.
3. Activities
1. Advice for aches and pains，如果有人生病了，你会给什么建议呢？用以下图卡玩游戏，并练习情态动词。
参考对话：
A: I've got a cold .
B: You should take some medicine and go to bed.
A: I have a toothache.
B: Maybe you should eat less candies.
2. Asking for and giving advice,询问与给出建议，用以下卡片进行练习。
3. Modal verbs board game ,用can 、must、mustn't、don't have to等玩跳棋游戏，可准备一个骰子，按骰子上的数字前进，并说出相应的句子，如果说不出则倒回原处，看谁先到达终点；或两个人轮流说，说对则计一分，如果轮到A说第三格上的句子，A却说不出或者说错了，则B可以有这个机会，B说对可计分，看最后谁的分多。
参考答案部分截图：
4. Worksheets
1. Modal verbs worksheets 适合1-3年级,情态动词与交通规则一起学，口述或写都可。
2. Modal verbs worksheets 适合3-4年级
3. Modal verbs worksheets 适合5年级及以上
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