as...as...用法小結
（1）...as+形容詞（副詞）原級+as...;not as/so+形容詞（副詞）原級+as...
Their factory is as large as ours.他們的工廠和我們的一樣大。
I study as hard as you.我和你一樣用功學習。
He doesn’t get up as/ so early as his parents.他不像他父母那樣早起床。
（2）……倍數+ as + 形容詞（副詞）原級+as...
Line AB is 3 times as long as Line CD.=Line AB is twice longer than/3 times the length of Line CD.線段AB是線段CD長的3倍。
（3）as + 形容詞+ a/an + 單數可數名詞+ as; as + 形容詞+複數名詞+ as
She is as good many records as possible.我們需要儘量多的唱片。
There is as much sugar in it as eight pieces of sugar.其中的含糖量相當於八塊方糖。
I have’t got as much money as I thought.我沒有原來想像的那麼多錢。
（4）as/so long as 只要；如果
You may use that dictionary as long as you take care of it.只要你好好保存，你可以用那本詞典。
as a matter of fact=in fact事實上、實際上……
It seems easy,but as a matter of fact,it』ll take us a long time to work it out.
這道題貌似簡單，實際上要解出的話很費時間。
（5）as much/ many as多達……，……那麼多
On Sports Day, during the relay race, you will use most of all, perhaps as much as 650 calories an hour.在運動會上，進行接力賽跑時，你消耗的能量最多，可能每小時多達650卡。
As many as 700 different languages are spoken in Africa.非洲有多達700種不同的語言。
He didn’t catch as many as he』d hoped.他沒有捉住預想的那麼多。
（6）as...as possible; as... as one can
The teacher should write the words on the blackboard as carefully as he can. =The teacher should write the words on the blackboard as carefully as possible.老師在黑板上應儘可能仔細地把字寫好。
Please be as friendly as possible to your friends.=Please be as friendly as you can.請對你的朋友儘可能友好。
（7）as...as + 年代數字/名詞
As early as 1950 I knew him.早在1950 年我就認識他了。
He walked as far as the post office.他步行到郵局。
（8）as/so far as I know
As/ So for as I know, he will be away from home for 3 months.就我所知，他將要離家3個月。
（9）as soon as—……就……
Please let us know as soon as you arrive in Bejing.一到北京，請通知我們一聲。
（10）as well as 和；也；還有
He gave me money as well as advice.他除了給我忠告外，還給我錢。
He studies French as well as English.他不但學習英語，而且學習法語。
區別下列用法
1)as(so)far as 和……一樣遠，遠至（原級比較或表示距離）；就……來講
2)as(so)long as 和……一樣長（原級比較）；只要（引導條件狀語從句）
3）as well as和……一樣好；既……也……（連接並列成分）
4）as good as和……一樣好；事實上（作狀語）
as if可用as though替換，在此引導表語從句，另外它們也可引導狀語從句，從句既可用陳述語氣，也可用虛擬語氣。如：
①It looks as if /though it’s going to rain.（陳述語氣）
②You look as if you』d seen a ghost.（虛擬語氣）
as is the case with = as with ……就和……的情況一樣
As is the case with his mother, he is fond of music. 跟母親一樣，他喜歡音樂。
As with human, animals also love their babies. 同人一樣，動物也愛它們的幼仔。
as good as
as good as 作為固定詞組意為「幾乎一樣」，「實際上等於」，作為同級比較結構，意為「和……一樣好」。如：
①He is as good at English as me.②My bike is as good as yours.
…as it is
該固定詞組表達意思是「就以（現在）這個樣子，」「根據現在的情況」。
如：He decided to buy the house as it is.
as long as/so long as只要
(1)引導條件狀語從句
You may borrow the book as / so long as you keep it clean. 只要你不把書弄髒，你就可以借。
You will succeed so long as you work hard. 只要你努力就會成功。
As long as you study hard, you』ll make great progress. 只要你努力學習，你就會取得很大進步。
(2)和……一樣長
This rope is as long as that one.這條繩子和那條一樣長。
This bridge isn’t so/as long as that one.這座橋和那座不一樣長。
(3)長達……（表時間）
The old couple have been living in the small town as long as 50 years.這對老夫婦已在這個小城鎮裡住了長達50年。
as well/ as well as
as well 表示「也」，是副詞短語，用作狀語，通常放在句末，也可放在主語之後，相當於too,但一般無標點符號與句子隔開.as well as 通常看作一個複合並列連詞,連接兩個成分相同的詞、短語或句子，表示「既……又……，不但……而且……」當它連接兩個主語時，謂語動詞的人稱和數要與第一個主語保持一致。如：
The children learn to read, write and they play games as well.孩子們學習讀書寫字，他們也做遊戲。
With television,we can see a picture as well as hear sound.利用電視,我們既能聽到聲音,又能看到圖像.
Tom,as well as his parents,likes pop music.湯姆以及他的父母都喜歡流行音樂。