As is well known , oceans cover more than 70% of the earth. 我们知道 , 海洋占地球面积的百分之七十以上 。
五、含as的固定词组的用法
1、as soon as作“一…就”解 , 引导时间状语从句 。eg:
As soon as I get to Beijing , I'll write to you. 我一到北京 , 就给你写信 。
2、as/so long as作“只要”解 , eg:
As/So long as you study hard , you'll make progress. 只要你努力 , 你就会取得进步 。
3、as if/though常用来引导方式状语从句 , 作“好像 , 仿佛”解 。如果从句中讲的是非真实情况 , 则用虚拟语气 。eg:
She loves the child as if/though he were her own. 她爱这个孩子如同爱自己的孩子 。
As if/though也可用来引导表语从句 , 常用在“It appears/looks/seems… as if/though”句型结构中 。eg;
It appears as if/though it is going to clear up. 看起来天要晴了 。
It seems as if/though he knew nothing about it. 他好像对此事一无所知 。
4、as to作“关于 , 至于”解 。eg;
There is no doubt as to his honesty. 他的诚实是无可置疑的 。
5、as much/many as作“多达…” , “达到…之多”解 。eg:
He can earn as much as 5000 dollars a month. 他每月能挣5000美元 。
6、so/as far as I know作“就我所知”解 , 在句中作插入语 。eg:
As/So far as I know , he will come here next Monday. 据我所知 , 他将于下星期一到这里来 。
7、as a result , as a result of表示“由于…的结果” 。eg:
She died as a direct result of the accident. 她的死是那次事故的直接结果 。
8、as well为“也 , 还”之意 。eg:
Come early , and bring your brother as well. 早点来 , 把你的弟弟也带来 。
9、so as to , so…as to若跟动词原形 , 表示目的或结果 。eg:
He studied hard so as to pass the exam. 他努力学习以便通过考试 。(表示目的)
as……as
as adj(原级) as
as adv(原级) as
as soon as 一……就
as soon as possible 尽可能快地
as early as possible 尽可能早的
as carefully as you can 尽可能认真地
as careful as you can 尽可能认真的
so…as 一般用于否定句 , as…as 一般用于肯定句,(肯定否定都能用)
so…as不可用于肯定句 。as…as与so…as均可表示“与……一样” , as…as…的用法:两个as中间可以加形容词或者副词 , 由它要修饰的内容决定 。
它们的用法有异同之处:
肯定句用as…as , 不用so…as;否定句两者均可使用 。例如:
I didn't go as /so far as you. 我走得不像你那么远 。
They walked as far as the station. 他们步行到了车站 。
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