英语常用语法：时态一致

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英语常用语法：时态一致

　　1)并列谓语的时态一致。
9 t3 V" i- T: A6 B: _/ h　　【例如】Yesterday I went shopping, bought some books and had dinner at a good restaurant.
# d" g* B9 G$ v$ @　　The soldier looked at him, exchanged glances with his comrade and took out the gun.
* Y7 ?- m/ C( b  |3 W* U% O% H! |　　2)主从复合句的时态一致。
6 X% c2 g( u/ c$ N4 x# {; e% X- Q1 V　　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.
　　I wonder what happened to him yesterday.
* A# C# ?4 I8 k# F0 ]. A1 o　　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。
　　【例如】
　　He told me he made a big mistake.
7 h( g) F  O6 p! |5 b6 J( k& a　　He told me he would go to Beijing the next day.
　　He told he had finished his task.
　　The teacher told students that the earth moves around the sun.(客观真理)
' o: r% ?$ o3 P. K; E: A　　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.
/ c/ D! t/ U) o　　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。
　　【例如】
1 D+ {& O' D. O7 H- o3 K　　We will cancel our trip if it rains tomorrow.
　　I will go to visit the Summer Palace as soon as I arrive in Beijing.
9 k: s4 a# `3 x; G4 v  P! C
/ C- k" x$ k1 F5 n6 H" F/ h9 h

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