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from ever since和since then和after that time和from then on的区别?

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/23 00:03:23
from ever since和since then和after that time和from then on的区别?
没有from ever since,只有ever since
ever since,since在这里作副词,两个意思
1.ever since=since then 自从那时起,用现在完成时
2.ever since=since,起连词作用
It is 10 years ever since (since) we graduated from school
since then,这里since作介词,用现在完成时,从那时起
after that time,从那以后,用现在时或将来时
from then on,自那时起,用过去时
From then on,try as I may,I began to become very cool toward he