现在完成时课件(方案A)研究报告.pptVIP

现在完成时 ;;现在完成时的两种基本用法：;现在完成时的基本句型：;例句： ;例句：;过去分词的构成分为规则变化和不规则变化两种：;;a）already 往往用于肯定句，用在疑问句时表示强 调或加强语气；yet 用于否定句和疑问句。;b） never 是否定词，表示“从来没有”，而ever 表示“曾经”;c） just表示“刚刚”（用于完成时态时，与already，never 等副词的位置一样，多用在助动词have/has和动词过去分词之间）;d） before 用于完成时，而ago 用于过去时;现在完成时的运用(2):;例如1：;例如2:;例如3：;;练习3：;3. have been to/ have gone to 的区别 have/has been to… 指 “去过某地” (表示主语曾“去过某地”,但现在已离开)。 have/has gone to… 指 “去了某地” (表示主语现在“去了某地”, 不在说话地点);例如：;练习4：;不规则动词表;（一）ABC 型: draw drew drawn drink drank drunk drive drove driven eat ate eaten fall fell fallen fly flew flown forget forgot forgotten get got gotten/got ;（一）ABC 型: give gave given go went gone grow grew grown hide hid hidden/hid know knew known lie lay lain mistake mistook mistaken ride rode ridden;（一）ABC 型: ring rang rung rise rose risen see saw seen shake shook shaken sing sang sung speak spoke spoken steal stole stolen;（一）ABC 型: swim swam swum take took taken throw threw thrown wake woke/waked woken/waked/woke wear wore worn write wrote written;（二） ABB型: bring brought brought build built built burn burnt/burned burnt/burned buy bought bought catch caught caught dig dug dug feel felt felt fight fought fought;（二）ABB型: find found found have had had hear heard heard hold held held k