延续动词与瞬间动词% Y, y3 B& \/ c' L7 x* {
1)用于完成时的区别
- S) ~) C# }# _, a/ `& e% L 延续动词表示经验、经历; 瞬间动词表示行为的结 果,不能与表示段的时间状语连用。" p: R8 J6 M2 f! \7 U
He has completed the work. 他已完成了那项工作。 (表结果)
% [% v! r5 K8 w; x I've known him since then. 我从那时起就认识他了。(表经历)
) ?$ P- c' {/ j" L$ r q# ^9 c; y: e 2)用于till/until从句的差异
! _, V2 w* i) v# ]8 q6 W9 y" d. M 延续动词用于肯定句,表示"做……直到……" 瞬间动词用于否定句,表示"到……,才……"
6 x, y$ ]4 [, F7 x He didn't come back until ten o'clock.7 d3 j, v: R0 V: `/ Z5 v/ c5 c
他到10 点才回来。" ]% G, W- O0 l& }& t: [& `. g
He slept until ten o'clock. i) i3 O8 I! Q/ x& [, ?' t
他一直睡到10点。
' o6 Z& l- o9 `5 W) m, z% ? 典型例题
% C, I$ g2 o! t# F 1. You don't need to describe her. I ___ her several times.7 y3 ]2 _1 q6 e( [( }' r
A. had met B. have met C. met D. meet& O& T0 A( |( R$ J/ X) e
答案B. 首先本题后句强调对现在的影响,我知道她的模样,你不用描述。再次,several times告知为反复发生的动作,因此用现在完成时。; _2 [ N; q% \% b/ ?8 O
2.——I'm sorry to keep you waiting.
$ K2 g! M# f0 \ ——Oh, not at all. I ___ here only a few minutes.! V, X1 X# S; h' A: M+ e
A. have been B. had been C. was D. will be0 i! c" |6 _- r8 I! w( s
答案A. 等待的动作由过去开始,持续到现在,应用现在完成时。 |