英语常用语法：时态一致

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英语常用语法：时态一致

$ Z: B& ^8 i% s7 A# Z; e, q. t8 }　　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.
4 q% \/ H- F7 e! t- B) o* Z　　The soldier looked at him, exchanged glances with his comrade and took out the gun.
+ q; b7 G1 A. E! }0 X- R　　2)主从复合句的时态一致。
0 v1 I6 M2 l$ j1 G& r3 S　　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。
  ^3 j# N& B, b" U' _) }　　【例如】
& q8 y6 P6 ^: x- n　　I wonder what will happen tomorrow.
　　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。
　　【例如】
　　He told me he made a big mistake.
　　He told me he would go to Beijing the next day.
: w5 |- y8 f! W% X; s1 p　　He told he had finished his task.
8 {2 y8 U" m/ y- _+ u' r　　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。
  V. P$ K! G. M0 E6 o; ^　　【例如】
: ]; G/ }* p$ P) I5 C9 r+ d# ^　　The universityswhereshe is studying was founded in 1950.
/ M1 Y* t) E% V, T8 K8 Q- {0 B: E　　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。
  A5 w) ~- P8 ]) V) g& b　　【例如】
　　We will cancel our trip if it rains tomorrow.
　　I will go to visit the Summer Palace as soon as I arrive in Beijing.

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