1、,U19Now is enough !,leave sth. to sb. 留下 reservation n.预定 used to aux. v.曾经，过 去常常 pool n.游泳池 active adj.活跃的,本节重点掌握 used to do(原形)过去常做某事，现在不做了。常用于一般过去时，后跟动词原形！ 其 疑问句：Did sb. use to do sth.?否定句：sb. didnt use to do sth. .,形式主语，真正的主语是动词不定式短语。但避免用动词不定式短语做主语。,v.+介词（及物）,most 修饰？ 此句一般现在时的间接陈述句。,一般现在时表事实的永久性
2、,that指代前面的陈述内容,1.used to think +v. 2.by=next to 3.all day 一整天 4.every night=all the nights 5.too much+不可数n. 6.get tired,时间状语，位于句首，描述过去动作，所以用过去时。,1.区分 in front of in the front of 2.区分 maybe may be,go out 不及物 to play 不定式表目的 复习think about,enough相当于as much as I need,本单元学习并练习used to do 和 used to be 并熟知其疑问句和否定句。 used to无现在时态但要注意它运用在各人称时的形式。 肯定句：I used to play football. 否定句：I didnt use to play football./I never used to play football. 疑问句：Did you use to play football?,与图180-210中的动态动词不同，此处的be不可省！,谨记典型形容词+介词的搭配good at,fond of,keen on,afraid of,LISTENING,
