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ããA. began B. having begun C. beginning D. begun
ãã2. When first ______ to the market, these products enjoyed great success. A. introducing B. introduced C. introduce D. being introduced ç¶è¯ä»å¥ä¸ççç¥ç¨æ³ç°æ»ç»å¦ä¸ï¼
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ããï¼ 2 ï¼ When ï¼ it is ï¼ heated to 100 â , water will turn into vapor. æ°´å çå° 100 ææ°åº¦å°±ä¼åæè¸æ°ã
ããï¼ 3 ï¼ When / While ï¼ I was ï¼ on my way to work, I met her. å¨ä¸ççè·¯ä¸æéè§äºå¥¹ã
ãã2. if, unless, once å¼å¯¼çæ¡ä»¶ç¶è¯ä»å¥ãä¾å¦ï¼
ããï¼ 1 ï¼ If ï¼ it is ï¼ properly treated, waste will do no harm to the environment. å¦æåºç©å¦¥åå¤çï¼å°±ä¸ä¼å¯¹ç¯å¢æå±å®³ã
ããï¼ 2 ï¼ The price, if ï¼ it is ï¼ a little higher than last year's, is still rather reasonable.
ããä»·æ ¼å³ä½¿æ¯å»å¹´ç¨é«ï¼ä½ä»ç¶ç¸å½åçã
ããï¼ 3 ï¼ I'll not go to the party unless ï¼ I am ï¼ invited. å¦æä¸é请æï¼æå°±ä¸åå é£ä¸ªæä¼ã
ããï¼ 4 ï¼ Unless ï¼ he is ï¼ in uniform, he doesn't look like a policeman. å¦æä¸ç©¿å¶æï¼ä»çä¸å»å°±ä¸åè¦å¯ã
ããï¼ 5 ï¼ Once ï¼ you are ï¼ caught stealing in a supermarket, you will be published. å¨è¶
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ããï¼ 1 ï¼ Though / Although ï¼ he was ï¼ blamed for his mistake, the boy didn't seem to be angry.
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ããï¼ 2 ï¼ He was happy, though / although ï¼ he was ï¼ poor. ä»è½ç©·ï¼å´å¾å¹¸ç¦ã
ããï¼ 3 ï¼ Whether ï¼ she is ï¼ sick or well, she is always cheerful. æ 论æ¯çç
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ããï¼ 4 ï¼ Anyone, no matter who / whoever ï¼ he is ï¼ , may point out our shortcomings. æ 论æ¯ä»ä¹äººç»æ们æåºæ们ç缺ç¹é½è¡ã
ããï¼ 5 ï¼ No matter how / However hard the task ï¼ is ï¼ , we must fulfill it in time.
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é¡»ææ¶å®æå®ãï¼æ³¨æï¼ä»å¥ç主è¯å主å¥ç主è¯ä¸ä¸è´æ¶ï¼åªçç¥ä»å¥ä¸ç be å¨è¯å½¢å¼ï¼
ããï¼ 6 ï¼ The government of China has decided to develop western China, no matter what / whatever the difficulties ï¼ may be ï¼ .
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ãã4. as if, as though å¼å¯¼çæ¹å¼ç¶è¯ä»å¥ã
ããï¼ 1 ï¼ He rubbed his eyes and yawned as if / though ï¼ he were ï¼ waking up after a long sleep.
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ããï¼ 2 ï¼ He stood up as if / though ï¼ he wanted ï¼ to leave.
ããä»ç«èµ·æ¥å¥½åè¦ç¦»å¼ãï¼æ³¨æï¼ as if / though + to do 表示ä¸ä¸ªå°æ¥çå¨ä½ï¼ ï¼ 3 ï¼ Jim hurriedly left the room as if / though ï¼ he was ï¼ angry. Jim åå¿ç¦»å¼äºæ¶é´ï¼å¥½åçæ°äºã
ããäºã than, as å¼å¯¼çæ¯è¾ç¶è¯ä»å¥ä¸ççç¥ç¨æ³ï¼å½ä¸åç主è¯è¿è¡æ¯è¾æ¶ï¼ä¸è¬çç¥ä»å¥ä¸çè°è¯ï¼å½ä»å¥ä¸ç主è¯ä¸è°è¯ï¼ be å¨è¯é¤å¤ï¼å主å¥ä¸ç主è¯ä¸è°è¯ç¸åæ¶ï¼é常çç¥ä»å¥ä¸ç主è¯åè°è¯ï¼åªä¿çæ¯è¾çé¨åã
ããï¼ 1 ï¼ He is taller than his brother ï¼ is ï¼ . ä»æ¯ä»çå
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ããï¼ 2 ï¼ The population of China is larger than that of America ï¼ is ï¼ . ä¸å½äººå£æ¯ç¾å½äººå£å¤ã
ããï¼ 3 ï¼ You hate him as much as I ï¼ hate him ï¼ . æåä½ ä¸æ ·æ¨ä»ã
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