在英语中,since应该怎么理解,怎么合适的放在句中呢还有such,应该怎么理解,怎么合适的放心句中呢,谢谢

在英语中,since应该怎么理解,怎么合适的放在句中呢还有such,应该怎么理解,怎么合适的放心句中呢,谢谢
在英语中,since应该怎么理解,怎么合适的放在句中呢
还有such,应该怎么理解,怎么合适的放心句中呢,谢谢

在英语中,since应该怎么理解,怎么合适的放在句中呢还有such,应该怎么理解,怎么合适的放心句中呢,谢谢
since是自从的意思,一般用在现在完成时,遵循“主将从现”

from a particular time or event in the past until the present, or in that period
of time
　We've been waiting here since two o'clock.
　I haven't played rugby since I left
university.<...

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from a particular time or event in the past until the present, or in that period
of time
　We've been waiting here since two o'clock.
　I haven't played rugby since I left
university.
　She left London ten years ago, and I haven't seen her
since.
　The factory has been here since the 1970s.
　It was exactly five years since her father had
died.
　Since the end of the war over five thousand prisoners have been
released.
　He lost his job five years ago, but has since found other
work.
　I left school in 1995, and since then I've lived in
London.
ever since
(=all the time since)
　We've been friends ever since we were at school
together.
　She's been terrified of the sound of aircraft ever since the
crash.
　We came to the UK in 1974 and have lived here ever
since.
used
to give the reason for something
　Since you are unable to answer, perhaps we should ask someone
else.
since when?
spoken used in questions to show that you are very
surprised or angry
　Since when have you been interested in my
feelings?
long since
if something has long since happened, it happened a long
time ago
　I've long since forgiven her for what she did.
WORD CHOICE: since, for, during, over
Use
since to say that something started at a point in time in the past, and
is still continuing : He has been living in Leeds since 1998. | We've
known about it since May.
Since is usually followed by a time
expression ('last year', 'this morning', '4 o'clock' etc) or by the simple past
tense. Use the present perfect or the past perfect in the other clause : I
have loved movies since I first went to the cinema. |He had been
seriously ill since Christmas.
!! Speakers of British English
usually say it is a long time/two weeks etc since ..., and
speakers of American English it has been a long time/two weeks etc
since ..., but both uses are correct : It's weeks (BrE)/It's been
weeks (AmE) since I saw Grandma.
Use for when you state the
length of time that something has been happening : We have known each other
for ten years (NOT since ten years). | I had been waiting for hours (NOT
since hours). |I haven't seen him for ages (NOT since ages).
During and over are used when you state the period of time in
which something happens or changes : During her first year at college, she
had several boyfriends. | Over the last six months, crime has
doubled.

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since“自从”放句首就行了或 想要从啥时候开始那个英文的前面
such“例如”一般用 such assuch as 一般怎么放在句中呢，那he is such a man 应该怎么理解呢名词+such as+例子
such+名词+as+例子
he is such a man "他是这样的一个人"，就看你前面或后面是怎么形容的了。...

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since“自从”放句首就行了或 想要从啥时候开始那个英文的前面
such“例如”一般用 such as

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