现在完成时精讲精华版(共8页).docx

精选优质文档-倾情为你奉上现在完成时专项讲解一、构成:现在完成时由“have/has+ 动词的过去分词”构成。 现在完成时的肯定式、否定式和疑问式及简单回答形式（以动词study为例）： 肯定式：I （You）havestudied. He(She, It) has studied. We(You, They) have studied. 否定式I(You) have not/havent studied. He(She, It)has not/hasnt studied.We(You, They) have not/ havent studied.疑问式：Have I( you ) studied? Yes, you (I) have./No, you (I) havent. Has he (she, it) studied? Yes, he(she,it) ha