Revisionof Grammar2020/10/18 1Grammar 1: Simple Present Tense III2020/10/18 2*一般现在时态的否定和疑问形式否定和疑问形式都要借助do/does.I like my picture.- I dont like my picture.- Do you like your picture?-What do you like?2020/10/18 3She likes purple.- She doesnt like purple.-Does she like purple?- What does she like?2020/10/18 4Grammar2:The Present Perfect Tense.2020/10/18 51.构成:助动词have/has+动词的过去 分词,即:have/has done, 现在以动词 work为例子将现在完成时态的肯定 形式, 否定形式和疑问形式及简略答 语讲解一下.2020/10/18 6*肯定形式:I /You have worked.He/She/It has wo
