2024年小升初 英语复习课件 现在完成时

Revision of the Present Perfect Tense 现在完成时专讲 小初精讲班 学习目录 现在完成时态的概念 现在完成时态的结构 现在完成时态的否定，疑问形式 现在完成时态的用法 现在完成时态与一般过去式的比较 现在完成时态练习 冬天来了，春天还会远吗？ If winter has already come, can spring be far behind? 1.现在完成时的概念 1）表示过去发生或已完成的动作对现在造成的影响或结果； 2） 表示过去已经开始并一直持续到现在的动作或状态。 E.g. He has learned English since 2020. past now future 现在完成时 一般过去式 现在进行时 一般将来时 一. 结构 1.肯定句: have / has + p.p.(过去分词) 2.否定句: have/has + not + p.p.(过去分词) 3.一般疑问句: Have / Has 提到句首 Yes, … have / has. No, … haven't /hasn’t. 规则动词 (1)一般动词，在词尾直接加“ ed ” 　work--worked--worked , visit--visited--visited (2)以“ e ”结尾的动词，只在词尾加“ d ” 　　live--lived--lived (3)以“辅音字母 + y ”结尾的动词，将 "y" 变为 "i" ，加“ ed ” 　　study--studied--studied , cry--cried--cried (4)重读闭音节结尾且末尾只有一个辅音字母的动词，先双写末尾 辅音字母再加“ ed ” 　　stop--stopped--stopped , drop--dropped--dropped 动词变化之一： 不规则动词的过去式以及过去分词 AAA: put– put –put let—let –let ABB: stand—stood— stood ABA: become—became—become ABC: eat— ate—eaten AAB: beat--beat--beaten 动词变化之二： 5.缩写形式 I have … You have … We have… They have… He has… She has … =I’ve … =You’ve … =We’ve… =They’ve… =He’s … =She’s… 二、用法 1、表过去发生的某一动作对现在造成的影响或结果 --Would you like some bread? --No, thanks. I have just had my breakfast. (对现在的影响：不饿) 常与副词 just（刚刚）, already, before, yet（一般 疑问：已经；否定句：还), 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. 常用于现在完成时的时间副词,介词: already (已经): 用于肯定句I have already posted the letter . yet(已经): 用于否定句,疑问句 He hasn’t done his homework yet. just(刚刚) They have just left. ever(曾经) Have you ever been to Beijing ? never(从不) I have never seen him . before(以前) Have you seen the film before? since(自从…以来) I’ve worked i