时态的构成规律 . h9 y8 s) J# |7 ~
英语通过对动词形式的变化来构成不同的时态和语态。主要是使用be和have作为标识，其构成是有规律的。Be的作用是用来构成进行时和被动语态。Have 用来构成完成时。两者合起来与动词可构成完成时的被动语态完成进行时。看例句（以work, follow为例）： & C0 Z4 \1 I/ [( l% i B1 X
1）be： & U/ w# [; X/ [
They are working.(现在进行) ( M% I" `1 f; z
They were working.（过去进行） * ^4 v' p% c& B- E7 V
They will be working.（将来进行） 来自www.Examw.com
% u. h4 f( `* U1 K5 W4 y2 j They are followed. （现在的被动） # A% \6 h( \" d9 }9 b( u. I+ }
They are being followed.（现在进行的被动）
* D' `; ]% I: [ They were being followed.（过去进行的被动）
' z* R: u) ]: W5 I8 ~ They will be being followed.（将来进行的被动） 1 ~/ ^2 n1 W9 |' [9 |
2) have : W: U# [' } Y1 w4 ~5 y# C
They have worked.（现在完成）
8 v6 r) z1 u8 H/ V G They had worked.（过去完成） 7 X/ B+ d4 ]$ P: b, o, X9 e
They will have work.（将来完成）
1 Y6 W6 Z# D. ?. | t: l 3) have + be:
7 L O7 T8 M- y) n# K, C They have been working.（现在完成进行） 2 e" R. N; M" }9 S
They had been working. （过去完成进行） % e. N. b4 Z9 o' H& {1 }
They will have been working.（将来完成进行）
) \3 l+ ]2 G: A The work has been done. （现在完成被动）
3 l9 k9 U( m' t The work had been done. （过去完成被动） 6 A9 ^- u o8 m ~* |- J" d! B
The work will have been done. （将来完成被动） 8 U7 o8 ], u C
The work has been being done. (现在完成进行的被动) , O9 C# F6 g4 F# s8 P' I" _7 X
The work had been being done （过去完成进行的被动） |
发表于 2012-8-15 23:36:10
