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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  Z: @6 b+ }4 H2 Q　　1)并列谓语的时态一致。
　　【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。
( J9 W$ }; h# c; d0 |6 z: U- u　　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】
8 `7 @4 E! D; ~- p/ B% g　　I wonder what will happen tomorrow.
  S" V* C1 ~$ l9 i" }" g　　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。
5 I* U2 U& w5 ]　　【例如】
　　He told me he made a big mistake.
8 l- l, v/ r7 K, G) \* m5 N/ Y$ h　　He told me he would go to Beijing the next day.
8 r5 j+ y+ U! G) c5 X/ A　　He told he had finished his task.
" c  J- H7 p; Y' ]4 ^% q　　The teacher told students that the earth moves around the sun.(客观真理)
1 C" O  t' f4 H　　3)定语从句和比较状语从句时态不受主句影响。
& R4 l4 l" ~8 t$ H& R" L% X8 o$ M6 _　　【例如】
2 w; m, @+ g5 V% H　　The universityswhereshe is studying was founded in 1950.
, g7 L  b6 i7 `5 @9 R+ c/ L, W4 l　　You now speak English better than you spoke it last year.
& x; G5 ^. O) |0 U$ }　　4)时间和条件状语从句中，常用现在时表示将来。
7 Z8 p# S" B, P9 j% f　　【例如】
+ d9 y' k8 A9 J0 ]2 |　　We will cancel our trip if it rains tomorrow.
; L! I# P( }, @　　I will go to visit the Summer Palace as soon as I arrive in Beijing.
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