Unit 4 第三课时 Discover useful structures -ppt课件 --(2022)高中英语新人教版选择性必修第三册.pptx

1、Unit 4 Adversity and courageLesson 3 Discover useful structures-The present perfect continuous tense高二人教版英语选择性必修第三册第四单元Objectives Learn the basic structure,functions and uses of the present perfect continuous tense Distinguish the present perfect continuous tense from the present perfect tense P38 .

2、this is the adventure that I have been dreaming of.P38 We are now camped on the ice and we have been managing to survive.P39 We have been struggling for days,.have/has been doing the have/has+p.pbe+doing The boy _(eat)since five minutes ago.has been eatingThe boy started eating five minutes ago.He i

3、s still eating now.The man _(work)in the field for half an hour.has been workingThe man started working in the field half an hour ago.He is still working now.我从八岁起就开始学英语了，现在仍然很爱它。我从八岁起就开始学英语了，现在仍然很爱它。I _ English since I was 8 years old and I still love it.have been learningYou _ and I am proud of yo

4、u!你一直在进步，我真为你感到骄傲。你一直在进步，我真为你感到骄傲。have been making progressThe little boy _ to be attentive,but cant help falling asleep.小朋友一直努力在集中注意力，但还是情不自禁睡着了。小朋友一直努力在集中注意力，但还是情不自禁睡着了。has been strugglingIt _ these days.这些天一直在下雨。这些天一直在下雨。has been raining4.You have been making progress and I am proud of you!5.The

5、little boy has been struggling to be attentive,but cant help falling asleep.6.It has been raining these days.1.The boy has been eating since five minutes ago.2.The man has been working in the field for half an hour.3.I have been learning English since I was 8 years old and I still love it.S(主语)+has/

6、have been doing现在完成进行时现在完成进行时定义现在完成进行时表示动作从过去过去某一时间开始，一直持续到现在现在，或者刚刚终止，或者可能还要继续进继续进行行下去。4.You have been making progress and I am proud of you!5.The little boy has been struggling to be attentive,but cant help falling asleep.6.It has been raining these days.1.The boy has been eating since five minute

7、s ago.2.The man has been working in the field for half an hour.3.I have been learning English since I was 8 years old and I still love it.现在完成进行时的用法现在完成进行时的用法1 1 learn 8 years agofuturenowlearnlearnHe has been learning English since he was 8 years old and he still loves it.表示动作从过去过去某时开始一直到说话时还一直到说话时

8、还在进行在进行或可能还要继续下去可能还要继续下去。与现在完成进行时连用的时间状语时间状语:all day/month;this month/week/year;these days;recently/lately;in the past/last few+时间段;since+时间点;for+时间段,ever since等。He has been working all day.They have been building the bridge for two months.The two parties have been trying to unite since the New Year

9、.e.g.:How everyone will envy me when I tell them I am admitted to the university I have been dreaming of.现在完成进行时的用法现在完成进行时的用法2 21.A:I am sorry I have kept you waiting so long.B:It is all right.I have been reading the newspapers.2.We have been waiting for you for half an hour.3.Her eyes are red.Its o

10、bvious that she has been crying for a long time.2.表示不久前刚刚结束刚刚结束的动作。这种意义通常根据上下文来判断。现在完成进行时的用法现在完成进行时的用法3 3 1.It has been raining these days.2.We have been practicing Kung Fu recently.3.I have been visiting some cities of China this month.3.表示在一段持续的时间内动作的多次多次重复重复，而这个重复的动作在说话时并不不一定在进行一定在进行。现在完成进行时的用法现在

11、完成进行时的用法4 42.Why are you late again?I have been waiting for you for two hours.1.You have been making progress and I am proud of you!4.表示某种强烈的感情色彩,如：赞赏、赞赏、批评、愤怒批评、愤怒等。现在完成时和现在完成进行时的比较 相同点：相同点：1.动作都发生在过去动作都发生在过去2.都与一段时间连用都与一段时间连用比较一：Li Jia _ (read)a book about psychology.(She finished reading the book

12、.)Li Jia _(read)a book about psychology.(She is still reading the book.)has read has been reading pastfuturenowread dohave read pastfuturenowread dohave been reading do现在完成时现在完成时现在完成进行时现在完成进行时动作刚结束；动作刚结束；强调对现在的影响或结果强调对现在的影响或结果动作还在延续；动作还在延续；强调动作的延续性强调动作的延续性Have you been meeting him recently?你最近经常见到他吗

13、？Have you met him recently?你最近见过他吗？The teacher has been telling us to be careful all the term.整个学期，老师一直在告诉我们要细心。The teacher has told us to be careful all the term.老师告诉我们整个学期都要细心。比较二：（1）现在完成进行时可以表示动作的重复；现在完成进行时可以表示动作的重复；现在完成时一般不表示动作的重复现在完成时一般不表示动作的重复比较二：（2）A._ have you visited Egypt this month?I have

14、 visited Egypt twice this month.(过去往返埃及和居住地,但现在已回来)B._ have you been touring Egypt?I have been touring Egypt for two month.(过去一段时间一直待在埃及,没有离开过)How many timesHow longTip 2:现在完成时现在完成时表示表示已完成已完成的动作，提问时用的动作，提问时用how many times。而现在完成进行时，表示。而现在完成进行时，表示持续的、不间持续的、不间断的断的动作，提问时用动作，提问时用how long。比较三：Tip 3:Tip 3:

15、现在完成进行时现在完成进行时比较生动，有时含有比较生动，有时含有明显的明显的感情色彩感情色彩(喜悦喜悦、愤怒愤怒、不满不满、厌恶厌恶等。)，而，而现在完成时现在完成时往往只说明一个往往只说明一个事实事实，一种一种影响影响或或结果结果。试比较：试比较：I have waited for you for two hours.I have been waiting for you for two hours.下列句型中常用现在完成时 It is(has been)+一段时间 since+从句 This(that/It)is the first(second)time that+完成时 This(Th

16、at/It)is the best/finest/most interesting.+that+完成时 比较四：（1）Its/It has been 3 years since they got married.Its the first time that I have been to the Great Wall.This is the most interesting film that I have seen.They have known each other since 1970.（1 1）有些表示状态、感情、感觉的动词如：）有些表示状态、感情、感觉的动词如：表示感官、感觉：see

17、,hear,smell 等；表示爱憎：love,prefer,mind 等；表示希望、意愿：wish,want,desire 等；表示相信、猜想：believe,think,suppose 等；不不能用于能用于现在完成进行时现在完成进行时，但，但可可用于用于现在完成时现在完成时。John has loved Mary since ten years ago.比较四：（2）SummaryBasic structure,and uses of the present perfect continuous tense.S(主语)+has/have been doing1.表示动作从过去过去某时开始一直到说话时还在进行一直到说话时还在进行或可能还要继续下可能还要继续下去去。2.表示不久前刚刚结束刚刚结束的动作。这种意义通常根据上下文来判断。3.表示在一段持续的时间内动作的多次重复多次重复，而这个重复的动作在说话时并不一定在进行不一定在进行。4.表示某种强烈的感情色彩,如：赞赏、批评、愤怒等。SummaryDistinctions between the present perfect continuous tense and the present perfect tense.Thank you for your listening!