which與that兩者都可指物,?？苫Q.其區(qū)別主要在于：
1.引導(dǎo)非限制性定語從句時,通常要用which.如：She received an invitation from her boss,which came as a surprise.她收到了老板的邀請,這是她意想不到的.
2.直接放在介詞后作賓語時,通常要用which.如：The tool with which he is working is called a hammer.他干活用的那個工具叫做錘子.
3.much,little,none,all,few,every(thing),any(thing),no(thing) 等時,通常用that.如：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that can be done must be done.
4.當(dāng)先行詞有the very,the only,the same 等修飾時,通常用that.如：This is the only example that I know.我知道的例子只有這一個.Those are the very words that he used.那是他的原話.
5.當(dāng)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：.如：This is the best dictionary that I’ve ever used.這是我用過的最好的詞典.The first thing that you should do is to work out a plan.你應(yīng)該做的第一件事是訂個計劃.
6.當(dāng)關(guān)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.
7.當(dāng)先行詞是一個既指人又指物的并列詞組時,通常用that.如：They talked about the persons and things that most impressed them.他們談?wù)摿耸顾麄冇∠笞钌畹娜撕褪?他們談?wù)摿耸顾麄冇∠笞钌畹娜撕褪?
8.當(dāng)要避免重復(fù)時.如：Which is the course that we are to take?我們選哪門課程?