2015上海中考英语复习：时态的呼应

　　1.主句中谓语动词如果是现在时或将来时,从句中的谓语动词可以用任何所需要的时态,

　　he wants to speak to the headmaster.

　　He said that he won't be free tomorrow.

　　he came last night.

　　2.主句中的谓语动词如果是过去时态,从句中的谓语动词一般情况下要用过去时态的某种形式.

　　He said that he was working hard on his Chinese.

　　he had a very good journey home.

　　he hadn't bought the present yet.

　　he would stop in Moscow on the way.

　　3.如果从句所述内容是客观真理,则谓语动词总是用一般现在时,而不受主句中谓语动词时态的影响.

　　eg. Miss Gao told us that light travels much faster than sound.

　　4.时间或条件状语从句中,若主句是一般将来时或祈使句,从句要用一般现在时代替将来时.

　　eg.Stop talking when the headteacher ______(walk)into the classroom.

　　Jim won't watch TV until he ___ (finish) his homework every time.

　　5.有些动词短语本身即是被动语态的形式, 不要再加by 短语,常用的有

　　be covered with \be surprised at \be interested in

　　be worried about \be made of/from \be known to

　　6.某些动词形式是主动语态,但含有被动的意思.

　　eg. This dictionary sells well.

　　This kind of car drives fast.

　　The woolen sweater costs $ 88.

　　7.主动语态中有些动词如:make,see,listen, watch,feel后常跟不带to的动词不定式作宾语补足语,变为被动语态要带上to

　　8.注意：

　　1)祈使句 ＋ and/or ＋ 简单句是常用句型

　　祈使句 + and + 简单句 表示"如果…，就…"

　　祈使句 + or + 简单句 表示"…否则…"

　　eg. 1.Go down the street,and you'll see a hospital.

　　2.Be quick,or we'll be late.

　　9.语序：不管宾语从句是陈述句、一般疑问句或特殊疑问句，都要用陈述句语序，也就是说主谓次序不能颠倒。 连接词＋主谓结构

　　(1).Bill wanted to know who did this.

　　(2).I don't know what's the matter with Bob?

　　(3).I don't know what's wrong with them?

　　9、注意：在think后的宾语从句，如果需要表示否定意义，一般不在宾语从句中否定，而是在主句中否定。

　　eg. I don?t think that English is easy.

　　I think that English is not easy. ( 误)

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