小学英语语法现在完成时ppt课件.ppt
,语法专项课件（现在完成时1）,Part,语法透析,考点大观易错辨析通关训练,语法透视,考点大观,易错辨析,通关训练,现在完成时定义,现在完成时定义三要素：1. 表示到现在为止已经完成或刚刚完成的动作。2.一件发生在过去的事情对现在产生影响。3.一个动作开始于过去，并持续到现在（也许还将持续下去）。We have known each other since 2005. 我们从2005年认识的。I have lived in Wuhan for several years.我在武汉住了好几年了。,现在完成时结构,语法透视,考点大观,易错辨析,通关训练,肯定句：主语 + have/ has + 过去分词+.,否定句:主语+havent ( have not) +过去分词 主语+hasnt ( has not ) +过去分词.,疑问句:Have / Has+主语+过去分词.?,I havent finished my homework. 我还没有完成作业。,Have you finished your homework? 你完成作业了没？,I have finished my homework. 我已经完成作业了。,现在完成时的用法,语法透视,考点大观,易错辨析,通关训练,1) 表示到现在为止已经完成或刚刚完成的动作。Now we have planted all the trees.截止目前，我们种完了所有的树。He has just come back. 他已经回来了。They have built many buildings in this city. 他们在这个城市建成了好多建筑物。,现在完成时的用法,语法透视,考点大观,易错辨析,通关训练,2) 表示过去发生的动作,强调结果或对现在的影响。Someone has broken the window. I have already lost the key. I havent read that book yet . I have just cleaned my hands.,(窗户现在是坏的),(我现在没有钥匙),(不了解书的内容),(手是干净的),现在完成时的用法,语法透视,考点大观,易错辨析,通关训练,3) 表示从过去开始并持续到现在的动作或状态。 She has learned English for 5 years. 她学英语已经五年了。He has lived in Beijing since he was born .从他出生那天起就住在北京。Has he lived in Shenzhen for 4 years? 他住在深圳四年了吗？,语法透视,考点大观,易错辨析,通关训练,过去分词的变化（规则）,(1)一般动词，在词尾直接加“ ed ”。 work-worked-worked (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”，再加“ ed ”。 study-studied-studied (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 ”。 drop-dropped-dropped,语法透视,考点大观,易错辨析,通关训练,过去分词的变化（不规则）,A.过去分词与不规则动词的过去式形式一样havehadhad spend spentspent makemademadesaysaidsaid findfoundfound hearheardheard meetmetmetleaveleftleftflyfliedflied,语法透视,考点大观,易错辨析,通关训练,过去分词的变化（不规则）,B.过去分词与过去式形式不一样taketooktaken see saw seenspeak spokespoken singsangsung drivedrovedriven bewas/werebeen gowentgone,语法透视,考点大观,易错辨析,通关训练,过去分词的变化（不规则）,C.过去分词，过去式与动词原形一样cutcutcutput putput letletletreadreadread,语法透视,考点大观,易错辨析,通关训练,现在完成时的标志词1,标志词：already(已经), yet(已经),already: 常用于肯定句中.yet: 常用于否定句,疑问句尾.,I have already seen this film. 我已经看过这部电影了。I havent seen this film yet. 我还没有看这部电影。Have you seen this film yet? 你看过这部电影了没？,语法透视,考点大观,易错辨析,通关训练,现在完成时的标志词2,since: (自以来)1)since+时间点Hehasstayedheresince5oclock.2)since+ 时间段+ agoHehasstayedheresince5hoursago.3)since+ 从句ShehastaughtEnglishsincehecamehere. for: (长达）for+ 时间段He has kept the book for 2 weeks.,语法透视,考点大观,易错辨析,通关训练,辨析 have been to和 have gone to,have been to someplace. 曾经去过某地，已经回来has gone to someplace.某人去了某地，还没有回来,My father has gone to Shanghai for a meeting.他（已经）去了上海。,My father has been to Shanghai for a meeting.他（曾经）去了上海。,语法透视,Next,考点大观,易错辨析,通关训练,Mr. Brown has had his TV _ 15 years. Ive taken driving lessons _last month. My sister has had her cell phone _a month . My friends havent visited me _my birthday. We havent used our car _ a long time . She hasnt had a good cup of coffee _years. Tom has worn glasses _he was 7 years old.,for,since,for,since,for,for,since,用for 或since填空,语法透视,考点大观,易错辨析,通关训练,用have/has been to, have/has gone to填空,1.Where is your brother? He _ the shop. Hell be back soon.2. _ you ever _ to America? Yes, I _ New York twice.3. Here you are at last! Where _ you _? I _ London.4. David _Australia. Im sure hes already arrived.5. Is Benny here? No, he _ the school library. He left five minutes ago.,has gone to,Have been to,have been to,have been,have been to,has gone to,has gone to,Homework:,Finish exercise “现在完成时专项练习”。,
