情态动词讲解教案明日歌文嘉
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高中英语综合演练
【热身阅读】
We have only one earth
Dear human being，
法令纹怎么办 Have you ever en such a notice “A black smelly earth with lots of dirty things on it is crying and struggling.”？ 1.多糟糕啊！ Long，long ago，the earth was healthy and beautiful，and 2.它被茂密的森林和各种各样的植物覆盖。 The water in the rivers and lakes and as was clean and harmless. There were not so many 3.灾害of nature. 4.人与大自然和谐相处,Why has everything changed？ Becau we human being do a lot of bad things to her. First， We cut down the forests， destroy the grass，and the water 5.冲走 a lot of
soil down the rivers into the lakes and as， making a lot of places 6.洪水泛滥 and many people 7.“被”死亡 and making her surface ugly. Secondly，we u lots of chemical powder in the wars. we burn plenty of coals，gas in the factories and cars，making much SO2 and CO2 with the heavy smoke 8.在空气中肆虐（传播），so a lot of people suffer from this terrible air pollution， especially in winter. As a result of this，the temperature of the earth is getting higher and higher. It is dangerous for human being，animals and plants to exist. Thirdly，we pour a lot of waste and 9.有毒的 water into the rivers，lakes and as,making all kinds of fishes，plants and birds die. Now， if we go on doing bad things to the earth， the earth will die. If the earth died， where would we human being go？ The earth is our common living place. So it is everyone’s duty to 10.保护 our home ―― the earth. Do remember： We have only one earth！
Time Is Money
“Time is money.” This saying means that time is very valuable.
But time is more valuable than money. The money we have lost can be gained again, b
ut the time we have wasted cannot be regained. Moreover, sometimes persons can exist without money, but nothing can be done without time, just as no one can live without air.
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Despite being so valuable, time is often neglected by men. Since time is an invisible thing, men often waste their time unconsciously. Without anything to do, they may gossip from morning till night.
Man can live only at most to about 100 years. It ems fairly long, but in fact it is rather short. We often say “How quickly time flies!” How many things can a man accomplish in such a short period? Hence we should u the valuable time properly to do our work. We will race with it. We will study and work hard. Never waste a little bit of it.党的纪律主要包括
【情态动词的用法要点】不识抬举
一． can和could
我的成语
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特别说明：
（1） could用来表示请求时，语气委婉，主要用于疑问句，不能用于肯定句，答语应用
can（即：could不能用于现在时态的简略答语中）。如： ――Could I u your dictionary?
――Yes, you can.(否定回答可用：No, I’m afraid not.) (2) can和be able to辨析
can(could)和be able to都可以表示能力，意思上没有区别。但can只有现在式和过去式，而be able to则有更多的形式。如：
I’ve always wanted to able to speak fluent English.
Tho bags look really heavy, are you sure you’ll be able to carry them on your own? 但是，表示在过去某时的某一场合经过一番努力，终于做成了某事，通常不用could，而用was/were able to来表示。这时，was/were able to相当于managed to do或succeed in doing。如：
After the accident it was a long time before she was able to walk again.
The fire was very big, but most people were able to escape from the building. (3) 惯用形式“cannot too ”表示“无论怎么 也不（过分）”。如： You cannot be too careful.你越小心越好。 惯用形式“cannot but+ 不定式（不带to）”表示“不得不，只好”。如： I cannot but admire her determination.我不得不钦佩你的决心。
二．may和 might
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三．must和have to
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四．shall和should
五．will和would
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组曲
文雅的意思
特别说明：would与ud to辨析
would可用来表示过去反复出现的动作，但不能表示过去存在的状态，所以我们不能说：“she would be a quiet girl.” 另外，would强调过去某种特定情况下的活动，是完全过去的事情，同现在没有联系。而ud to则着眼于过去和现在的对比，隐含现在已不存在，动作或状态都可表示。Would可以表示不规则的习惯，ud to则不可。如：
He ud to be a naughty boy and cau trouble. I ud to get up at six in the morning.
Sometimes she would take a walk in the neighboring woods.
In tho days, whenever I had difficulties, I would go to Mr. Chen for help.
六．need和dare
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七．ought的用法：
说明：should与ought to 表示“应该”时的区别
should 表示自己的主观看法，而ought to的语气中，含有“按道理应该 ”之意。若要反映客观情况或涉及法律义务和规定，一般用ought to。如： You should help them with their work.
You are his father. You ought to get him to receive good education.
