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1 We know (that) we should study hard.(thatå¯çç¥,å®å¨å¥åä¸ä¸æ ä»»æåï¼
2 I don't think he can pass tha exam.(think,believe,supposeåçthatä¸è¬é½çç¥ï¼
3 They believed they would win the game.
4 You must take back what you said.(whatæ¯è¿æ¥ä»£è¯,è¿æ¥ä¸»è¯you must take backåä»å¥you said;whatä¹æ¯è°è¯å¨è¯saidç宾è¯ï¼
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5 Could you tell me who he is?(whoå³ä½¿è¿æ¥è¯,åæ¯è¡¨è¯ï¼
6 I know who did the good deed.(whoå¨ä»å¥ä¸ä½ä¸»è¯ï¼
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7 He asked me which shirt I liked best.( whichå¨ä»å¥ä¸æ ä»»å®è¯,修饰shirt)
8 I want to know when the plane will take off.(whenæ¢è¿æ¥ä¸»å¥I want to knowåä»å¥the plane will take off,åæ ä»»æ¶é´ç¶è¯ï¼
9 Our teacher asked me why I was late.(whyæ ä»»åå ç¶è¯ï¼
10 Mike asked me how I could do the work without any help.(howå¨ä»å¥ä¸ä½æ¹å¼ç¶è¯ï¼
11 We don't know if/wether our teachers will attend the class meeting.(if/wetherè¿æ¥ä¸»å¥We don't knowåä»å¥,ä¸è½çç¥ï¼
12 Please let me know whether or not you'll come to the party.(wether or notä¸æ ä»»æå,èµ·è¿æ¥ä½ç¨,ä¸ç¨if)