英语常用语法：时态一致

yuci010

英语常用语法：时态一致
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　　1)并列谓语的时态一致。
' [  }9 U* |* s( v8 B　　【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.
, x" h3 ?. M: c, P; f　　2)主从复合句的时态一致。
7 B9 S$ @. J0 l( M" \. o9 r　　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】
& u- p, r% Y( h+ F$ T, q3 B5 [1 h　　I wonder what will happen tomorrow.
　　I wonder what happened to him yesterday.
　　I wonder what is happening now outside.
& H; w+ x7 u" b+ 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。
" ]% Q9 \  o  k　　【例如】
* }" s- E, e, G' i; g# {1 w　　He told me he made a big mistake.
0 W' c+ A$ ?2 C5 ~　　He told me he would go to Beijing the next day.
6 X* S. m3 x: m% n  R& N　　He told he had finished his task.
0 z8 e1 z3 Y: P$ I/ ^) ?$ s* r* N　　The teacher told students that the earth moves around the sun.(客观真理)
2 K/ {- f# F  q% J, r2 B4 |' S, N　　3)定语从句和比较状语从句时态不受主句影响。
2 A% V- q5 n6 _1 d　　【例如】
　　The universityswhereshe is studying was founded in 1950.
) W4 N) G  W! m" Q) z  H4 h　　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】
3 y7 P) ~+ V" z　　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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