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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" U0 q" x$ V5 T" i2 F4 p　　1)并列谓语的时态一致。
# Y3 Z- u. v3 X; q. M& a4 Z- Y& ~　　【例如】Yesterday I went shopping, bought some books and had dinner at a good restaurant.
% d% p% h5 V+ f$ c$ l5 j- p0 l　　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。
1 b) v2 u! w+ w' t+ o　　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。
( l/ [! v' J7 e( \& n' Q; G4 o6 f　　【例如】
　　I wonder what will happen tomorrow.
　　I wonder what happened to him yesterday.
　　I wonder what is happening now outside.
4 c/ j3 ~$ h- g　　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。
　　【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.
# `! X. z2 D8 ]5 O( p　　The teacher told students that the earth moves around the sun.(客观真理)
8 e0 p, h" u) ]# ~" \6 t1 Q2 i/ O/ L　　3)定语从句和比较状语从句时态不受主句影响。
　　【例如】
) `2 k! w/ T/ f8 Q( j8 X% k' o　　The universityswhereshe is studying was founded in 1950.
　　You now speak English better than you spoke it last year.
　　4)时间和条件状语从句中，常用现在时表示将来。
6 J# G1 P! V# A4 G: B4 D　　【例如】
4 E+ ]+ C+ w, B" t" q  n  p# n　　We will cancel our trip if it rains tomorrow.
) }# f, n5 D( F  c　　I will go to visit the Summer Palace as soon as I arrive in Beijing.

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