canä¸be able to表示è½åçæ¶åï¼æ¯åä¹çãå¦ï¼
He can speak two foreign languages.
He is able to speak two foreign languages.
å®ä»¬ç¨æ³ä¸çä¸å主è¦ä½ç°å¨ä»¥ä¸å æ¹é¢ï¼
canåªæ两ç§æ¶æï¼å³canåcouldï¼èbe able toæå¤ç§æ¶æï¼å¦was/were able toï¼will/shall be able toï¼have/has been able toçï¼
I'll be able to drive the car in a week.
Through his diligent work, the deaf-mute has been able to read and write in a sign language.
表示è¿å»éè¿åªåç»äºåæäºæäºè¦ç¨be able toï¼èä¸è½ç¨canãå¦ï¼
I was able to swim to the bank after the boat turned over.
can åbe able to é½å¯ä»¥è¡¨ç¤ºè½åãcanæ³æä¸è¬çè½åï¼èä¸åªæ两ç§å½¢å¼ï¼å³can/couldãbe able toå主è¦æå
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¶å½¢å¼ä¸»è¦æ¯é beåçååï¼æ以形å¼æ¯canå¤ã
å¯ä»¥è¯´ï¼I can swim. I am able to swim.
ä½æ¯ä¸è½è¯´ï¼All the people could escape from the big fire in time.
åªè½è¯´ï¼All the people were able to escape from the fire in time.
canè½è¡¨çæµï¼be able toä¸è½ãcançè¿ç§ç¨æ³ä¸»è¦ç¨äºçé®å¥åå¦å®å¥ã
Somebody is knocking at the door. Who can it be?
It can't be our teacher who is knocking at the door.
å
¶è¯å®å½¢å¼æ¯must beãå¦ï¼
It must be our teacher who is knocking at the door.
must have done something 表示对ç°å¨å®ææè¿å»å¨ä½ççæµï¼å
¶å¦å®å½¢å¼æ¯can't have doneãå¦ï¼
-His parents must have gone abroad.
-No, I don't think so. They can't have gone, for I saw them only this morning.
è¦ç¹å«æ³¨æå®ä»¬çåæé®å¥å½¢å¼ï¼
He must be a good teacher, mustn't/isn't he?
The students must have gone to bed, haven't they?
They must have finished their lessons yesterday, didn't they?
couldæ¢å¯ä»¥ç¨è¯å®å½¢å¼ï¼åå¯ä»¥ç¨çé®æå¦å®å½¢å¼ãå¦æç¨could表示ç°å¨âå¯è½âï¼æ¯canè¯æ°æ´å å§å©ãå¦ï¼
If you don't spend enough time on your studies, you could fail in the final examination.
It could be our teacher who turned off the light last night.ä¸It must be our teacherç¸æ¯ï¼è¿å¥è¯è¡¨ç¤ºçå¯è½æ§æ´å°ï¼å 为å®è¡¨ç¤ºäºä¸¤ç§å¯è½æ§ï¼å³âå¯è½æ¯âä¹å¯è½âä¸æ¯âï¼èmust beåªè¡¨ç¤ºäºä¸ç§çæµã
could have doneè¿ä¸ªå¥åæå®çç¹æ®å«æï¼è¡¨ç¤ºâæ¬æ¥å¯è½åå°èæªåå°çäºâãå¦ï¼
Our class team could have won the game.
åç以ä¸ä¾å¥ï¼
He cannot be over praised for what he has done for all of us.å¯è½æåå¦ä¼ç解为âä¸è½å 为ä»ä¸ºæ们大家åäºè¿äºäºæ
èè¿å表æ¬ãâå
¶å®è¿æ ·ç解æ¯éçï¼å 为è¿éçcannot beä¸æ¯è¡¨âä¸è½âï¼èæ¯è¡¨âä¸å¯è½æ¯âçææï¼å æ¤è¿å¥è¯çæææ¯âä»ä¸ºæ们大家åäºè¿äºäºï¼åºè¯¥åå°å¤§å¤§ç表æ¬ãâå³âåæä¹è¡¨æ¬ä¹ä¸è¿åâã
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-Can/May I sit here?
-Yes, please.â
ç±äºmay notæ两个ææï¼å³âä¸å¯è½âåâä¸è®¸å¯âï¼å æ¤ä½¿ç¨æ¶è¦ç¹å«æ³¨æãå¦ï¼
He may not go home this weekend.æ¤å¥æ¢å¯ä»¥è¡¨ç¤ºHe will probably not go home this weekend.ä¹å¯ä»¥è¡¨ç¤º I don't permit him to go home this weekend.å¨å£è¯ä¸ï¼è¡¨è¾¾è¿ä¸¤ç§ä¸åçå«ä¹æ¯éè¿å¥éé³æ¥è§£å³çãå¦ï¼
He may `not go home this weekend. (I don't permit him to go home this weekend.)
He `may not go home this weekend. (He will probably not go home this weekend.)
èå¨ä¹¦é¢è¡¨è¾¾æ¶ä¸å¯è½ä½¿ç¨å¥éé³çæ段ï¼æ以æ好ç¨can't代æ¿may notæ¥è¡¨ç¤ºâä¸å¯è½âï¼
He can't go home this weekend.
canæ¯æ
æå¨è¯ï¼åªè½ç¨ä½è°è¯æåï¼be able toæ¯æ®éå¨è¯çè¯ï¼æ¢å¯ä»¥ä½è°è¯ï¼ä¹å¯ä»¥ä½éè°è¯ãå¦ï¼
Being able to speak English fluently, he has no difficulty in communicating with the Americans at the party.
How I long to be able to communicate with the foreigners in fluent English!
be able to åè¾¹æ¥å¨è¯ä¸å®å¼è¡¨ç¤ºä¸ç§å®é
æ
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¶å¦å®å½¢å¼ä¸æ¯be not able toï¼èæ¯cannotãå¦ï¼
-Were you able to catch the first bus yesterday morning?
-Noï¼I couldn't.
ä¸è¬è¯´æ¥ï¼be able toåè¾¹çå¨è¯ä¸å®å¼æ²¡æ被å¨è¯æãå¦:
I'm sure he is able to correct his mistakes in grammar.
ä¸è¯´ï¼I'm sure his mistakes are able to be corrected by him.
ä½æ¯ç¾å½è¿æ¥ä¹åºç°äºBeing able to be hurt by thingsè¿ç§ç»æï¼ç¾å½ä¸å®¶è§£é为English is becoming looser. (è±è¯åå¾è¶æ¥è¶ä¸ä¸¥è°¨äº)ï¼å¤§å®¶ä¸å®æ¨¡ä»¿ã