i want to retire by the time i am thirty

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：英语作业时间：2024/08/07 05:19:47

i want to retire by the time i am thirty
可以帮我分析一下为何用by the time i am thirty
为何不用at 或on 或in

at都是指比较具体的时间,也比较精确.
in和on无法与the time I am thirty 搭配.
by the time i am thirty最合适,by可以指过去也可以指将来.

i want to retire by the time i am thirty i want to retire by the time i'm thirty.请分析语法结构 I am going to retire somewhere quiet and beautiful. I __ to Las Vegas by the time you__back next week A,am going I want to speak to......I am the unique one I want to say I am the best. I am want to meet I am married to the object you want to 英语翻译I am from China.I just want to improve my english by mak I am a French,I want to learn Chinese by myself,having any m By the time I got to school,the second class___ I am going to retire somewhere quiet and beautiful.这其中的somew