1、时态六:现在完成时态:时态六:现在完成时态: 1. 定义: (1)动作发生在过去对现在造成影响。 (2)动作或状态从过去持续到现在或将来。(动词用延续性动词用延续性 动词动词) 2.结构:助动词助动词(have/hashave/has) + 动词的过去分词动词的过去分词 eg:1.I have eaten have eaten lunch. 2.I have known have known Bob for three years. 3.标志词:already, yet,never,ever,before,for+时间段 since+过去时间,since+一般过去时态 规则变化规则变化: 1.
2、直接在动词后直接在动词后-ed:start-_ 2.辅音字母辅音字母+y+y结尾的动词, 要变为结尾的动词, 要变为i i再加再加eded: study-_ carry-_ try-_ cry-_ copy-_ 3.双写双写:stop-_ plan-_ shop-_ kid-_ 不不规则变化规则变化:am/is-_ are-_ do/does-_ have/has-_ 4.基本句型:陈述句:Ms Chen has taught Chinese for 10 years. 变为否定句: _ 动词过去分词动词过去分词 的变化情况的变化情况 书上书上 136 页页 变为一般疑问句:_ 肯定回答: Yes, _ 否定回答: No, _ 练习: 写出下列动词的过去分词。 am/is _ do _ go _ have _ isnt _ arent _ spend_ buy_ have/has_ take _ ask _ visit _ tell _ come _ bring-_ catch_ 用 have/has been to,have/has gone to 填空: 1. Where is Jim? He_ _ _ Gulin. 2.She_ _ _ the park.She will be back in two hours.