同學(xué),
about既是介詞也是副詞：
介詞 prep.
1.關(guān)于,對于
My mother often spoke to me about you.
家母常和我談起你.
2.在...的附近;在...的周圍
She sat up and looked about her.
她坐了起來,環(huán)顧四周.
3.在...的身邊
I had no money about me.
我身邊沒有帶錢.
4.大約在...時候
It happened about 5 o'clock in the morning.
這事發(fā)生在早晨約莫五點鐘的時候.
5.從事于
What the hell are you about?
你到底在做什么?
6.在...身上,在...的性格中
What I like about him is his sense of humor.
我喜歡的是他的幽默感.
副詞 ad.
1.在四周;到處
She likes to walk about.
她喜愛四處走走.
2.在附近,在近處
There were few people about.
附近幾乎無人.
3.大約;幾乎
John is about the same age as Tom.
約翰和湯姆的年齡相仿.
4.向相反方向
The ship turned about midway.
船在中途掉轉(zhuǎn)了航向.