英语常用语法：时态一致

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英语常用语法：时态一致
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　　1)并列谓语的时态一致。
6 U3 D8 L& N& B; P5 g8 D8 ^* Z: u　　【例如】Yesterday I went shopping, bought some books and had dinner at a good restaurant.
　　The soldier looked at him, exchanged glances with his comrade and took out the gun.
　　2)主从复合句的时态一致。
　　a)主句为现在时、将来时、现在完成时，宾语从句谓语动词时态按情况而定。
　　【例如】
　　I wonder what will happen tomorrow.
- W5 i( I+ E; s+ z7 o' K　　I wonder what happened to him yesterday.
　　I wonder what is happening now outside.
　　b)主句为过去时态，宾语从句一般用过去时态。如果宾语从句说明的是客观真理，用一般现在时。
% `$ d7 ?/ v3 ^! v1 ~1 e　　【例如】
　　He told me he made a big mistake.
　　He told me he would go to Beijing the next day.
　　He told he had finished his task.
: c9 _( W5 A$ w$ z+ X　　The teacher told students that the earth moves around the sun.(客观真理)
) i$ T& E5 G: ~9 v% z* Q$ [　　3)定语从句和比较状语从句时态不受主句影响。
　　【例如】
　　The universityswhereshe is studying was founded in 1950.
　　You now speak English better than you spoke it last year.
2 U- s6 ]- w) T: c, [% J　　4)时间和条件状语从句中，常用现在时表示将来。
　　【例如】
7 S# f# ^  l2 T% Y+ n　　We will cancel our trip if it rains tomorrow.
5 x! L) P  a. t% ]. j- U　　I will go to visit the Summer Palace as soon as I arrive in Beijing.

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