完成时语法问题she has changed a lot since the last time i saw her-s

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/14 13:06:01

完成时语法问题
she has changed a lot since the last time i saw her-she looks much older.
为什么用has changed不用had changed.

这句话要表达的意思是：自从上次我看见她到现在为止,她改变了很多.
是“到现在为止”,肯定是用现在完成时.
如果用had changed,那时过去完成时,那么句子不能用since,应该改为：she had changed a lot the last time i saw her.(我上次见到她之前,她就已经改变了很多）
而这句是强调到现在为止,改变了很多,只能用完成时.
（since并非只能用于完成时,since还可解释为“既然”,例：You can go home since you finished you homework.既然你完成作业了,你可以回家.）
OK?

1.Tom has changed a lot since I last saw him. it's a long time since i last saw you It's a long time since i saw you last. （）I saw her,she was working in a shop.A.The last time B.For It has been a long time since i saw you last time. H____ ,the city has changed a lot since 1980 It____ten years since I saw him last time.A has B was C had but a lot has changed since then 英语翻译My life has changed a lot in the last three years.I used ( ) the last year,he has changed a lot. it's a long time since i last saw you这句话有错误么 It's 3 years since I saw him last time.中的it's 能否换成has been?