摘要:情态动词 用法 例句 can/could 表示能力 1.“I don’t think Mike can type. “Yes, he can. 2.I can speak fluent English now , but I couldn’t last year. 在肯定句中.表示客观可能性.并不涉及具体某事会发生.常用来说明人或事物的特征.要表达具体某事实际发生的可能性时.不用can.需用could.may.might. 1. As a human being, anyone can make a mistake. 2. I’m confident that a solution can be found. 3. He can be very forgetful sometimes. 4. I may stay at home this weekend. 5. Peter might come to join us. 6. It will be sunny in the daytime ,but it could rain tonight. 表示请求和允许.表示请求.口语中常用could代替can.使语气更委婉. 1. Can we turn the air conditioner on? 2. Any police officer can insist on seeing a driver’s license. 3. In soccer, you can’t touch the ball with your hands. 4. Could you have her call me back when she gets home, please? 5. I wonder if I could just ask you to sign this. 表示对现在的动作或状态进行主观的猜测.主要用在否定句和疑问句中. 1. It can’t be easy caring for a man and a child who are not your own. 2. Can the man over there be our head master? 表示惊异.怀疑.不相信等态度.主要用在否定句.疑问句和感叹句中. 1. Can this be an excuse for not giving them help? 2. This can’t be true. 3. How can you be so crazy. 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 use 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. Those 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 .如: You cannot be too careful.你越小心越好. 惯用形式“cannot but+ 不定式 表示“不得不.只好 .如: I cannot but admire her determination.我不得不钦佩你的决心.

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阅读下面短文,用括号内所给动词的适当形式填空(必要时可加情态动词或助动词)。
“Everything happens for the best," my grandmother said whenever things weren’t going my way. "Don’t worry, one day your luck 【小题1】_______(change). "
Grandmother was right, as I discovered after graduating from college. I had decided to be sports announcer (广播员) in a radio station, so I 【小题2】_______ ( go) to Shanghai and knocked on the door of every station. But I got refused every time.
In one station, a kind lady said my problem was short of experience. " Get some work with a small station and 【小题3】_______(work) your way up ," she said.
I couldn’t get a job there, either. Then my dad told me a businessman had opened a company and needed someone 【小题4】_______ ( manage) the sports center. But again, I didn’t get the job.
I felt really down. "Your luck will change," Granny reminded me. I tried another radio station in Beijing. But the owner, a nice man, told me he already had someone.
As I left his office, I asked, " How can someone be a sports announcer if he 【小题5】_______(not, get) a job in a radio station?"
I 【小题6】_______( wait) for the elevator when I heard the man call, " What was that you said about sports? Do you know anything about football?" I 【小题7】_______(put) in front of a microphone and asked to imagine I was commenting (评论) on a football game. "Now you 【小题8】_______ (watch) the football game between Lu Neng and Shen Hua. . . "
On my way home, Granny’s words came back to me, " One day your luck will change, boy. And when it 【小题9】 _______( happen) , it’ll feel twice as good because of all the disappointment (失望) you 【小题10】_______ ( have) . " At that moment I knew just what she meant.

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阅读下面短文,用括号内所给动词的适当形式填空。(必要时可加情态动词或助动词)
Once there was a baby eagle (1)_________(live) in a nest on a cliff(山崖). The baby eagle loved his nest. It was warm, soft and comfortable. And even better, he had all the food and love that his mother could give. Whenever the baby eagle was hungry, his mother would always come just in time with the delicious food he liked.
He (2) ___________ (grow) happily day after day. But suddenly his world changed. His mother stopped (3) _________ (come) to the nest. He was full of sadness and fear. He thought he (4) _________ (die) soon. He cried, but nobody heard him.
Two days later his mother appeared with some nice food. The baby eagle was wild with joy. But his mother (5) __________ (put) the food at the top of the mountain and then looked down at her baby. The baby eagle cried out. “Mum, why did you do this to me? I’m hungry. Don’t you know I will die if I have nothing (6) __________ (eat)?”
“Here (7) _____ (be) the last meal I give you. Come and get it by yourself, ”his mother said. Then she flew down and pushed the baby eagle out of the nest.
The baby eagle (8) ________ (fall) down, faster and faster. He looked up at his mum, “Why do you abandon me?” He looked down at the earth. The ground was much closer. Then something strange happened. The air caught behind his arms and he began (9) ______ (fly)! He wasn’t moving to the ground any more. Instead, his eyes were pointed up at the sun.
“You(10)_______ ( fly)! You can make it!” His mother smiled.

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