1) 用于完成时的区别
* [0 s/ [) @; ?; [% y6 D 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。
) J5 ?' S7 c+ N) H* s0 p He has completed the work. 他已完成了那项工作。 (表结果)
' @) M) e" C0 w, V4 T% H6 @; e I‘ve known him since then. 我从那时起就认识他了。(表经历)
* f9 y4 G" G, c! g0 E6 K2) 用于till / until从句的差异 ! C2 H. w8 W* j0 b* x) ^/ @
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……"
! S6 G m8 v5 x* a# j; p He didn‘t come back until ten o‘clock. 中 华 考 试 网
, R$ C9 a0 P: O2 I3 @ 他到10 点才回来。 9 t3 y) h6 V6 k( W# p1 _
He slept until ten o‘clock. 1 h7 ~( g, A9 a8 e: h1 w0 n4 B
他一直睡到10点。
( z5 O4 `3 Y; v 典型例题
3 b/ B2 P( P8 h' N" x 1. You don‘t need to describe her. I ___ her several times. & x2 M6 x' ~' b; g z! W3 o
A. had met B. have met C. met D. meet ! s% P8 X8 p, J! r2 h
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。 ' B' g6 c, B7 t# c( K
2.---I‘m sorry to keep you waiting.
# s( [0 a1 u# L7 I8 d! b& { ---Oh, not at all. I ___ here only a few minutes.
" Z' Y" ~/ Z4 H, {9 G" L6 j5 p A. have been B. had been C. was D. will be / }2 p- H, V, d
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。 |