Unit5 动词不定式语法详解 不定式结构 肯定： to + do sth. 否定：not + to do sth.一、作主语To study hard is very important. It is very important to study hard.注意: 不定式作主语时，通常用it作形式主语, 把真正的主语放在后面。练习 1、It is necessary _us to learn to wait. (of/for) 2、It took them 1,000 yuan _this table. (buy)二、作表语My job is to teach English.我的工作是教英语。The most important thing is to learn something new and have fun.最重要的是学习新的东西和过得愉快三、作宾语1、动词+ to do sth.常用动词有：want / wish / like / would like / hope /
