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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* j0 o% A5 V9 o　　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.
$ A- F/ A/ R  {3 \' E& K; R　　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。
6 N9 I! R9 a% }1 `% p　　【例如】
+ e  X8 k8 [6 [% ]　　I wonder what will happen tomorrow.
　　I wonder what happened to him yesterday.
8 o3 H  U1 {2 Z　　I wonder what is happening now outside.
7 n9 _/ x; J6 ?9 m, q" W- |8 o　　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。
* c; s5 T6 M9 m8 A4 d　　【例如】
4 d- Y) G) t+ _; B& ?　　He told me he made a big mistake.
) P- u+ u6 F4 `6 |　　He told me he would go to Beijing the next day.
9 l8 S8 c- Q, ?/ v' X0 K　　He told he had finished his task.
7 T3 N) _( ^: ]% ?5 Q8 g8 `" ]　　The teacher told students that the earth moves around the sun.(客观真理)
　　3)定语从句和比较状语从句时态不受主句影响。
　　【例如】
+ ^+ @5 n7 O$ ]- p: c　　The universityswhereshe is studying was founded in 1950.
　　You now speak English better than you spoke it last year.
6 `; x% n/ \) M1 J" h7 b　　4)时间和条件状语从句中，常用现在时表示将来。
- ~1 A4 q; `2 Y5 l5 A　　【例如】
　　We will cancel our trip if it rains tomorrow.
2 r# r1 p! a$ T9 T9 F/ R9 k　　I will go to visit the Summer Palace as soon as I arrive in Beijing.