■ begin→be on, stop→ be over, buy→ have, borrow→ keep, ■ open→be open, close→be closed, join→be a member of,
die→be dead, ■ catch a cold→have a cold, get to know→know, become a
现在完成时: Contents(目录)
■ 定义:2点 ■ 时间标志词:5点 ■ 基本结构(谓语动词的使用):1点 ■ 注意事项:5点
(1.already,just,ever,yet,never,before等与现在完成时连用) 2.短暂性动词向延续性动词转化 3.现在完成时和一般过去时的区别及联系 4.have gone to, have been to与have been in 的用法比较 5.重点句型:It is/ has been+一段时间+since从句
already,just多用于肯定句中,ever,yet,never多用于疑问句和否定句中。 yet与before放在句尾,其余放在句中。 I have already finished my homework. 我已经做完家庭作业了。 He has just had his meal. 他刚刚吃过饭。 Have you ever sung this English song? 你曾经唱过这首英文歌吗? They haven’t started yet.他们还(尚未)没有动身。 We have never heard of it. 我们从来没有听说过这件事。
have been studying
过去 studied
be studying
had studied