關系代詞which與that的用法區(qū)別
兩者都可用作關系代詞引導定語從句，指物時有時可互換。如：
This is the book which / that you asked for. 這是你要的那本書。
I saw something in the paper that / which would interest you. 我在報上看到了一些你會感興趣的東西。
區(qū)別1：引導非限制性定語從句時，通常只用 which。如：
Jack drove too fast, which was reckless. 杰克開車開得太快，根本不考慮后果。
We took what he said literally, which may have been a mistake. 我將他所說的照字面意思來理解，但可能錯了。
The church, which dated back to the 13th century, was destroyed in an earthquake two years ago. 那座教堂是13世紀建成的，兩年前在一次地震中被毀了。
區(qū)別2：直接放在介詞后作賓語時，通常只用 which。如：
The treasure, some of which has been recovered, has been sent to the British Museum. 這些寶藏已送往大英博物館，其中有一些是失而復得的。
We did a fashion shoot on the beach in which the girls were modelling swimwear. 我們在海灘拍了一組穿泳裝做模特的女孩的照片。
The pianist made a conquest of every audience for which she played. 這位鋼琴家以她的演奏征服了每一位聽眾。
區(qū)別3：當先行詞是下列不定代詞或被 much, little, none, all, few, every(thing)，any(thing)，no(thing) 等修飾時，通常用 that。如：
He grasped at anything that might help him. 任何對他可能有幫助的東西他都想抓住。
There was little that the enemy could do but surrender. 敵人無法，只有投降了。
All [Everything] that can be done must be done. 凡能做的事都必須做。
A wise man thinks all that he says, and a fool says all that he thinks. 智者思其所言，愚者言其所思。
區(qū)別4：當先行詞有the very, the only, the same 等修飾時，通常用 that。如：
Those are the very words that he used. 那是他的原話。英語語法
This is the only example that I know. 我知道的例子只有這一個。
區(qū)別5：當先行詞有形容詞最高級或序數(shù)詞(包括last, next等)等修飾時，通常用 that。如：
This is the most interesting story that I've ever read. 這是我所讀過的最有趣的故事。
The first thing that we should do is to work out a plan. 我們應該做的第一件事是訂個計劃。
區(qū)別6：當關系代詞在定語從句中用作表語時，通常用 that。如：
China is not the country (that) it was. 中國已不是過去的中國了。
He is no longer the person that he was. 他已經不是以前的那個樣子了。
Our income is now double the amount that it was ten years ago. 我們現(xiàn)在的收入是10年前的兩倍。
區(qū)別7：當先行詞是一個既指人又指物的并列詞組時，通常用 that。如：
He was watching the children and parcels that filled the car. 他望著塞滿車的孩子和包裹。
The passengers and the suitcases that were still waiting had to be transferred to another plane. 仍在等待的乘客和行李只得改乘另一架飛機。
They log everyone and everything that comes in and out of here. 進出這里的所有人和物他們都會記錄。
區(qū)別8：當要避免與 which 重復時，通常用 that。如：
Which is the book that you need most? 哪本書是你最需要的？