sb是somebody的縮寫 指某人 sth是something 的縮寫 指某物 do 是動(dòng)詞原形，一般記語法的時(shí)候 動(dòng)詞原形都用do代替，但是往里面套句子的時(shí)候，都寫需要的動(dòng)詞原形 例如:ask sb to do sth 造句是 My teacher ask me to clean the classroom 動(dòng)詞后跟介詞to后才能再跟動(dòng)詞 例如：want to do sthSomebody wildly suggested dynamiting it .有人竟然輕率地主張炸開它。I 'd rather he was married to somebody else .我寧愿他同別的人結(jié)婚。"here's somebody for you," said the boy .“有人找你?！毙P說。He is not somebody one warms to easily .他不是人們?nèi)菀紫矚g的人。Put down that knife before you hurt somebody !把那刀子放下，以免傷人！Somebody like you could end up a goat .象你這樣的人最后可能變成替罪羊。Maybe you just wanted to scare somebody .也許你只是想嚇唬嚇唬什么人吧。Somebody asked after you this morning .今天上午有人打聽你來著。You said somebody had made free with my name .你是說有人盜用了我的名義。Suddenly somebody flashed an electric torch .手電筒霍然一亮。Somebody was going to die this time .這回可有人該命赴黃泉了。Maybe this house belongs to somebody .說不定這間屋子有主人。Somebody has falsely claimed the watch .有人冒領(lǐng)了那只手表。Somebody must have waited upon her .非得有個(gè)人來招待招待她。Somebody is calling us in the distance .遠(yuǎn)處有人在呼喚我們。