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could（過去式）、can、be able to 都翻譯為“能”,表示先天或后天學(xué)到的能力、技能 Could表示過去具備做某事的能力,不表示行...
have + 名詞 代替動詞，一般用have a 名詞。 As we had had a long walk through one of th...
情態(tài)動詞的意義及構(gòu)成： 情態(tài)動詞用來表達(dá)說話人的語氣和態(tài)度，如命令、勸告、建議等。 情態(tài)動詞有以下兩個(gè)特點(diǎn)：1. 本身有一定的意義，但不能獨(dú)立作...
條件句，主語用將來時(shí)或祈使句，從句則用現(xiàn)在時(shí)。 Last week at a dinner party, the hostess asked m...
直接引語與間接引語 He asked if Mr.Gilbert's operation had been successful and the...
過去完成時(shí) He had no sooner returned than he bought a house and went to live ...
將來完成時(shí)：shall（第一人稱）/will（第二、三人稱）+have+過去分詞（done） The Olympic Games will be...
She is going to set out from the french coast at five o'clock in the mor...
Roy Trenton used to drive a taxi.(used to 過去做某事，be used to 習(xí)慣做某事） A shor...