2011在職MBA英語語法概述：強調

　　一、一般強調結構

　　強調結構為： It is (was)…that…。

　　它可以用來強調句中的某些成分， 如主語(從句)、賓語(從句)、狀語(從句)等。

　　如強調主語或賓語， 則that可用who(指人)， whom或which(指物)來代替；

　　如強調的是狀語， 則不能用when, where等代替， 只能用that。

　　注意， 強調結構不能用來強調謂語動詞和表語。

　　It was my uncle that (who) sent me the parcel。

　　It is the article that (which) they discussed last week。

　　It was because he was too careless that he broke all the glasses。

　　It is in this room that I was born 30 years ago。