as
副詞 adv.
1.同樣地,一樣地
She is as tall as her mother.
她和她母親一樣高.
The dining room was twice as big as the Tom's.
這個(gè)餐廳比湯姆的餐廳大一倍.
This is as difficult a problem as you are likely to meet.
像這樣的難題,你可能會(huì)碰到.
介詞 prep.
1.(表示時(shí)間)當(dāng)還是…的時(shí)候
As a schoolboy,he showed every sign of genius.
當(dāng)他還是個(gè)小學(xué)生的時(shí)候,就顯示出了天資聰慧.
2.(表示方式)以…的身份,以…資格,作為; 以…形式,以作為; 以…角色,扮演…角色; 如同,像
3.(表示結(jié)果)成為,看作,看成
We had better treat it as a joke.
我們最好把它當(dāng)作玩笑.
4.(表示目的)為了,以…為目的
The dykes were built as a protection against the sea.
建筑堤壩是為了防止海水泛濫.
5.(表示舉例)例如,諸如…之類的
We talked about such subjects as the weather.
我們談?wù)摿酥T如天氣之類的話題.
連接詞 conj.
1.在…期間,當(dāng)…時(shí)候
I was coming in as he was going out.
我進(jìn)來的時(shí)候,他正出去.
2.盡管,即使,雖然
Intelligent as you are,I suspect you will fail.
盡管你聰明,我猜想你會(huì)失敗.
3.像…一樣
4.由于,因?yàn)?
As you weren't there I left a message.
因?yàn)槟悴辉谀抢?我留了個(gè)信兒.
5.照…方式
6.正如；如同
when
ad.
1.(用作疑問副詞)什么時(shí)候,何時(shí)
I'd like to know when they'll let him out.
我想知道他們什么時(shí)候放他.
When did you last see Margaret?
你上一次見到瑪格麗特是什么時(shí)候?
2.(用作關(guān)系副詞,引導(dǎo)關(guān)系從句)當(dāng)...時(shí)
There were times when I didn't know what to do.
有些時(shí)候我不知道該怎么辦才好.
conj.
1.當(dāng)...時(shí)
John got engaged to her when travelling last winter.
去年冬天旅行時(shí),約翰與她訂了婚.
Don't get excited when you talk.
你說話時(shí)別激動(dòng).
2.既然,考慮到
How can he get the promotion when his boss dislikes him?
既然上司不喜歡他,那他怎么會(huì)獲得提升呢?
3.雖然,然而
I had only fifteen dollars on me when the book I wanted cost twenty.
我身上只帶了十五元錢,可是我想買的那本書定價(jià)二十元.
4.在那時(shí),然后
pron.
1.什么時(shí)候,那時(shí)
Since when has she taught here?
她從什么時(shí)候開始在這兒教書的?
n.
1.(事件發(fā)生的)時(shí)間[the S]
while
KK:[]
DJ:[]
n.
1.一會(huì)兒,一段時(shí)間[S]
I'll be back in a while.
我一會(huì)兒就回來.
conj.
1.當(dāng)...的時(shí)候,和...同時(shí)
She listened closely while he read the letter.
他讀信時(shí),她聽得很仔細(xì).
I'll take care of your children while you are away.
你不在時(shí)我會(huì)照顧你的孩子的.
We must strike while the iron is hot.
我們必須趁熱打鐵.
2.而,然而
I like tea while she likes coffee.
我喜歡喝茶,而她喜歡喝咖啡.
3.雖然,盡管
While I like the color of the hat,I do not like its shape.
雖然我喜歡這頂帽子的顏色,但我不喜歡它的形狀.
4.只要
vt.
1.消磨(時(shí)光),輕松地度過[(+away)]
He whiled away the whole afternoon watching TV.
他看電視消磨了一個(gè)下午.
since
KK:[]
DJ:[]
ad.(常用于現(xiàn)在完成時(shí)或過去完成時(shí))
1.此后;從那時(shí)到現(xiàn)在
She left school three years ago and has worked as a nurse ever since.
她三年前畢業(yè),從那時(shí)起便一直當(dāng)護(hù)士.
2.之前,以前
prep.
1.(常用于現(xiàn)在完成時(shí)或過去完成時(shí))自...以來,從...至今
I haven't heard from him since last year.
我自去年以來未曾收到過他的信.
conj.
1.(常用于現(xiàn)在完成時(shí)或過去完成時(shí))自...以來,從...至今
It's been ten years since they married.
他們結(jié)婚到現(xiàn)在已經(jīng)十年了.
She has been living a hard life since her husband died.
她自從丈夫死后,一直過著艱苦的生活.
2.既然;因?yàn)?由于
He must have taken the book since it isn't here.
他一定是把書拿走了,因?yàn)闀巡辉谶@里了.
Since it is so hot,let's go swimming.
既然天氣這么熱,我們?nèi)ビ斡景?div style="margin-top:20px">