英語語法----介詞Preposition（Prep.）
⒁on and on 不停地 ⒂and so on （等等）
30.over 1）在……的上面（⊥） e.g.
the sun shines over the earth in the daytime.
the sky over me was clear and beautiful.
2）（數(shù)量上）超過 = more than e.g.
i think he is well over /above 50, and yet (he is )so strong.
over two hundred ss attended the meeting.
3）越過 e.g.
many times he has swum over the yangtze river.
there is bridge over the river.
zhang jian swan ~ the english channel successfully in .
4）在……時(shí)間中 e.g.
you have made great progress in your studies over the past year.
some of the rubbish, rots away over a long period of time.
31.past 1) 過了……（時(shí)間、年齡） e.g.
half a year past middle age
2) 從…… 穿過去 e.g.
he walked ～ me without (saying ) a word.
when i went ～ the p. o. this morning, i saw people lining up for a
dragon stamp.
32.(a)round 1).環(huán)繞，在…… 周圍 e.g.
to sit ～the table the earth goes / turns / moves ～the sun.
2) 在各處； 到處
to look ～ the room 環(huán)顧全室to travel ～the country 在全國各地旅游
3）= about (約)
33.since 自從……以來
i have worked for 21 years ～ i came here .
he has been in poor health ～ the beginning of the term.
note : since 強(qiáng)調(diào)從過去延續(xù)到現(xiàn)在的一段時(shí)間完成發(fā)生之事 （完成時(shí)）
after 僅表示過去某一時(shí)間后的情況 （過去時(shí)）
e.g. since then he has met a lot of trouble. after that he met a lot of trouble.
34.through 1) (表地區(qū)) 通過， 經(jīng)過
walk through the gate look through 透過…… 看
a little river runs ～ the village. the rain beat in ～ the broken window.
2) 用某種工具， 通過某種方式， 由于某種原因 e.g.
he learned english ~ tv. i learned the news ~ him.