延续性动词和短暂性动词之间的转化
1. already 和 yet的区别:
already 已经, 常常用于肯定句；
yet 已经,仍,还(没), 用于否定和疑问句句尾
Tom has already finished his task, but Jack hasn’t finished his yet.
2. for 和 since 的区别:
for + 时间段；since + 过去时间点 / 句子 (过去时态)
We have been in this school for 12 years.
= We have been in this school since 2008.
= We have been in this school since 12 years ago.
= We have been in this school since we came to this school.
初一英语练习题
英语单词快速记忆
英语语法练习题
3. have been to, have gone to 和 have been in (at) 的区别:
have gone to 去了某地 (没有回来)
have been to 曾经去过某地(已返回)
have been in (at) 去或来到(一直呆在那儿) + 一段时间
① --- Where is Jim?
--- He has gone to England, he’ll come back in 3 days.
② My parents have been to the Great Wall twice.
They like there very much.
③ --- How long has Peter been in the West Hill farm?
--- For four years.
延续性动词和短暂性动词之间的转化:
leave → be away from 离开
buy → have 购买
borrow → keep 借用
die → be dead 死去
open → be open 打开
become → be 成为
begin / start → be on 开始
join → be in / be a member of 加入
come /get (back) → be back 回来
arrive in (at) / get to / reach → be here / there 到达
