2024年仁爱科普版中考英语 语法专项——现在完成时课件

肯定形式: 否定形式: 疑问形式： have/has done … have/has not done… Have/Has + S + done… 一、现在完成时的构成 现在完成时的一般疑问句构成： have/has+动词的过去分词 4.特殊疑问句：特殊疑问词+一般疑问句？ Where have you been? How often have you seen her? How long has he studied English? 现在完成时 1.现在完成时可与recently（最近）, so far （到目前为止）,in the past（在过去） in the last few years(在过去的几年）等时间状语连用。 2.现在完成时可与 once ,twice , three times ,several times 等表重复次数的词语连用。 1)一般动词，在词尾直接加“ ed ”； work---worked---worked visit---visited---visited live---lived---lived 2）以“ e ”结尾的动词，在词尾加“ d ”； 3）以“辅音字母 + y ”结尾的动词，将 "y" 变为 "i" ，再加“ ed ”； admit commit submit ban plan trained-trained prefer refer occur beg jog drag hug clap drop stop shop trap equip chat nod rob 4）重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加“ ed ”. （一）规则动词变化规则 二、动词的过去分词 study---studied---studied cry---cried---cried play-played-played stay-stayed-stayed obey-obeyed-obeyed employ-employed-employed （二）不规则动词变化规则 (had、worked、played、watched) 三季度成果 四季度成果 The boy is tired. He ___________________ (just play) a ball game. 过去的动作 : The boy played a ball game. 对现在的影响: The boy is tired. has just played 1) I have already finished my homework. 2) Jane has just left . 3) He hasn't found his book yet. 1.已完成、影响性用法： 现在完成时表示过去发生或已完成的动作或状态对现在造成的影响或结果,也就是说,动作或状态发生在过去但它的影响现在还存在；常与just, already, yet, never, ever, lately, recently连用 1、表示过去发生的动作对现在造成的影响或结果，常与副词just，already, before, yet，never, ever等连用。 ① I have never heard of that before. ② Have you ever ridden a horse? ③ She has already finished the work. ④ Have you milked the cow yet? Yes, I have done that already. ⑤ I’ve just finished my homework. ⑥ He has not come yet. I have seen Avatar. She has already written 3 books . I haven’t seen the movie yet . Have you ever seen a sign like this ? How long have you ever studied in Huangguang Middle School Guangzhou Branch? 现在完成时用法 连用词: already “已经”用于肯定句 yet 用于：否定句: 句末 “还(没)” 一般疑问句: 句末 “己经” never 否定词 “从来没有” ever “曾经” just “刚刚” before“以前”（用于现在完成时