（2）有些结构中要用平行结构。例如：

　　would / had rather / sooner do something than do something， would / had as soon do something as do something （宁可……也不……）

　　1） Liu Hulan said she had rather die than give up.

　　2） I would as soon stay at home as go.

　　III 部分强调句

　　要强调句子的某一部分，可以把句子的结构改变一下，通常有两种表示强调的句式：It is / was … that …结构和What … is / was…结构。

　　一、It is / was … that … 结构

　　1.It is / was … that … 结构可以用来强调句子中几乎任何部分

　　例1：It was my mother that threw an egg at Mr. Li yesterday.

　　例2：It was Mr. Li that my mother threw an egg at yesterday.

　　2.被强调的部分指人时，可用who枵whom

　　强调主语时，如果指的是人， 可以不用that而用who来代替。强调宾语时，如果指点的是人，可用whom.例如：

　　1）It was the dean who walked by.

　　2）It was Mary whom the old lady missed most.

　　3被强调部分指物时，要用that

　　例如：It was an egg that my mother threw at Mr. Li yesterday.

　　4.被强调部分是状语时，也只能用that，不能用when或where.

　　例1：It is during his spare time that John has been studying a course in French.

　　例2：It was in the hall that the mayor held the press conference.

　　5.不能用It is / was … that 结构强调动词

　　强调动词常用do，过去式用did.例如：

　　1） They did study very hard yesterday.

　　2） He does look forward to making the acquaintance of her.

　　What … is / was … 结构

　　二、What … is / was … 结构常用来强调主语或宾语，在这种结构中，is/ was后面是强调的部分。例如：

　　1）What hurts is my left leg.

　　2）What I like is her style.