asas的用法总结
as是连词、副词、介词,作连词时意思是“因为,由于;在......时,随着;以??的方式,像;正如;虽然,尽管”,作副词时意思是“如同,像??一样”,作介词时意思是“作为;以??身份;当作;像,如同;当??时”。
“as(否定句中可用so)+adj./adv.+as?”,其基本意思为“??和??一样”。但在实际应用中,此结构在不同的语境中含义差异较大。
1、表示不同人或物同一性质的比较,意为“??和??一样??"。
例句:The tree is as tall as the building(is).
这棵树和那栋楼一样高。
2、表示同一个人或物不同性质的比较,意为“既??又??”
例句:Alice works as happily as(she)plays(happily).
艾丽丝愉快地工作,尽情地玩。
3、用于表示两个人或物不同性质的比较,表示程度相同或相当,意为“??而??”。
例句:He was as handsome as his wife was beautiful.
他长得非常英俊,他的妻子也长得非常漂亮。
扩展资料:
1、as?as结构的另一种形式是“as much/many+名词+as+从句”。
例句:Mary has written as many essays as her brother.
玛丽写的文章篇数和她弟弟一样多。
2、若有修饰成分,如twice,three times,half,a quaer等,必须置于第一个as之前。
例句:You are not half as clever as you think you are.
你可不像自己想象的那么聪明。
扩展资料
1、as...as的用法
1、接形容词或副词的.原级,在否定句中,第一个 as 也可换成 so。
例句:He doesn't study as (so) hard as his brother. 他学习不如他弟弟努力。
2、表示涉及数量或程度,可用“as much+不可数名词+as”和“as many+可数名词复数+as”。
例句:He doesn’t pay as much tax as we do / as us. 他没我们交的税款多。
3、可用(not) nearly, almost, just, nothing like, exactly, not quite, half, one-ten, twice, three times, 30 per cent等修饰,并且这些修饰语必须置于第一个as之前,而不能置于其后。
例句:This room is twice as large as that one. 这个房间是那个房间的两个大。
2、as…as…的常见句型
1、as…as possible/sb can尽可能的……
例句:
Please answer my question as soon as possible.
请尽快回答我的问题。
The detective is searching the man as carefully as he can.
那个侦探正在尽可能仔细地搜查那个男子的身体。
2、as…as usual/before像以前一样……
例句:
She looks as pretty as before.
她看起来和以前一样漂亮
Though they failed,they still worked as hard as usual.
尽管他们失败了,但他们仍像以前一样努力工作。
3、as long as只要,引导条件状语从句
例句:
I will stay with you as long as there is a room flree.
要是你有一间空余的房子,我就住在你这里。
You may borrow this book as long as you promise to give itback.
只要你答应归还,你就可以把这书借走。