（1）at

　　①接具體時(shí)間：eg.at six,at half past two,at ten to twelve

　　②表示“在…時(shí)刻”；eg： at noon,at midnight

　　（2）in

　　①表示“在（某段時(shí)間段）之間”；

　　eg.in January,in a month,in spring,in 2005

　　②在將來時(shí)中,表示“在某段時(shí)間之后”

　　eg.In ten years,I think I’ll be a reporter.

　　（3）on

　　表示在具體的某一天或某一天的上午、下午或晚上等。

　　eg. On Monday,On Tuesday afternoon,On May4th,On the morning of July 6th

　　（1）動(dòng)詞+介詞：look after,look at,look for,laugh at,listen to,hear from,turn On,turn off, wait for,worry about,think of,spend……On

　　（2）介詞十名詞：by train,on foot,at the end of ,at last,in the end,in trouble,at table,at breakfast,

　　in hospital,in time,On time, On one’s way to,with pleasure

　　（3）be+形容詞+介詞：be afraid of ,be good at,be good／bad for, be late for,be interested in,be angry, with,be full of,be sorry for

　　①表并列關(guān)系：not only……but also,neither……nor,and

　　②表選擇關(guān)系：or,either……or

　　③表轉(zhuǎn)折關(guān)系：but,while

　　④表因果關(guān)系：for,so

　　①引導(dǎo)時(shí)間狀語從句： after,before,when,while,as,until,till,since,as soon as

　　②引導(dǎo)原因狀語從句：because,as,since

　　③引導(dǎo)目的狀語從句：so that,in order that

　　④引導(dǎo)結(jié)果狀語從句：so that,so…that,such……that

　　⑤引導(dǎo)比較狀語從句：than,as…as

　　⑥引導(dǎo)賓語從句：that,if, whether