高中英语,句子中有since,before,after的都翻译后半句再翻译前半句对吗?

高中英语,句子中有since,before,after的都翻译后半句再翻译前半句对吗?
高中英语,句子中有since,before,after的都翻译后半句再翻译前半句对吗?

高中英语,句子中有since,before,after的都翻译后半句再翻译前半句对吗?
可以这么说的,我们叫后半部分为主句,给一些例子你看,对比对比：
I have known him since 1990.从1990年我就认识他了
Since everybody is here ,let's begin.既然大家都到了,那我们就开始吧.
before:
1.(时间)在.以前
We finished the work before noon.中午以前我们完成了工作.
2.(位置)在.前面,当着.的面.
He made a speech before a large audience.他在许多听众面前发表演说.
3.(顺序)在.之前,先于.
Think it over before you qct.行动之前你得仔细考虑一下.
4.(选择)宁可,宁愿.
I would die before surrendering to them.我宁愿死也不向他们投降.
after:
1.(时间,顺序)在.之后.
He came after nine a.m .他是在上午9时后来的.
Shut the door after you ,pleaase.请随手关门.
After you,please.您先请(您先走).
2.由于,鉴于,尽管,虽然.
After falling in the last two English tests,he made up his mind to
spend more time on English study.由于上两次英语不及格,他下决心在英
语方面多花些时间.
After all his efforts,he has failed.尽管尽了一切努力,他还是失败了.
要注意英语的一次多意哦,如果都按照时间的话好理解,

也不一定

按照语言习惯来就行我写题大多数都是这样的，能举反例吗又想来一个比较典型的例子，There will be a couple of years before it is possible to do sth. 几年后才有可能做某事。这样的貌似不能先翻译后面的。
give it full consideration before rendering your decision 考虑周全后再做决...

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按照语言习惯来就行

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对，后置提前

No

可以这么说的，我们叫后半部分为主句，给一些例子你看，对比对比：
I have known him since 1990.从1990年我就认识他了
Since everybody is here ,let's begin.既然大家都到了,那我们就开始吧.
before:
1.(时间)在.....以前
We finished the work before...

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可以这么说的，我们叫后半部分为主句，给一些例子你看，对比对比：
I have known him since 1990.从1990年我就认识他了
Since everybody is here ,let's begin.既然大家都到了,那我们就开始吧.
before:
1.(时间)在.....以前
We finished the work before noon.中午以前我们完成了工作.
2.(位置)在.....前面,当着.....的面.
He made a speech before a large audience.他在许多听众面前发表演说.
3.(顺序)在.....之前,先于.
Think it over before you qct. 行动之前你得仔细考虑一下.
4.(选择)宁可,宁愿.
I would die before surrendering to them.我宁愿死也不向他们投降.
after:
1.(时间,顺序)在.....之后.
He came after nine a.m . 他是在上午9时后来的.
Shut the door after you ,pleaase.请随手关门.
After you,please.您先请(您先走).
2.由于,鉴于,尽管,虽然.
After falling in the last two English tests,he made up his mind to
spend more time on English study.由于上两次英语不及格,他下决心在英
语方面多花些时间.
After all his efforts,he has failed.尽管尽了一切努力,他还是失败了.
要注意英语的一次多意哦，如果都按照时间的话好理解，采纳哦，谢谢

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这个是对的啊

(a)这里是 "preposition" (介词): "since" 译为 (b)两个句子有相同的含义!(我在军队里[服役]已经有三年了)