ThePresentPerfectTense(Revision)现在完成时复习1. Walls have ears.2. A cat has 9 lives. 3. Kings have long arms. 4.We know not what is good until we have lost it.Translate the following sayings :翻译以下谚语隔墙有耳。猫有九条命。普天之下，莫非王土。好东西，失去了才明白/珍惜。现在完成时的基本结构1 、肯定句：3、一般疑问句：主语+have/hasnot+V(p.p)+Have/Has+主语+V(p.p)+?Yes，主语+have/has.No，主语+havent/hasnt.1、肯定句：2、否定句：主语（I/We/You)+have主语（They）+have+V(p.p)主语（It/He/She)+hashehas=theyhave=hasnot=havenot=4. 缩写:（过去分词）hes theyvehasnt havent规则动词的过去分词1. workplantplay2. hopearrives
