英语选择性必修第一册Grammar activity优秀备课ppt课件

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仓颉之初作书盖依类象形故谓之文其形声相益即谓之字文者物象之本字者言孳乳而浸多也著于竹帛谓之仓颉之初作书盖依类象形故谓之文其形声相益即谓之字文者物象之本字者言孳乳而
The past perfect
The frm ishad + past participle.
Present cntinuus passive
What is the past perfect ?
概念：表示过去某一时间或动作以前已经发生或完成了的动作。
Read the passage. Study sentences 1-5 and cmplete grammar rules a and b.
a The past perfect verb shws what happened________(befre / after) the event r actin in the simple past.
b We dn't need t use the past perfect frm f the verb if the rder is clear. In that case, we can use_______ fr bth events.
Careful explanatin
过去完成时表示过去某一时间或动作以前已经发生或完成了的动作。它表示动作发生的时间是“过去的过去”。表示过去某一时间可用by, befre等构成的短语，也可用when, befre等引导的从句或通过上下文提示等。His eyes shne brightly when he finally received the magazine he had lng expected.
1. 过去完成时的构成1）过去完成时基本构成形式: had +过去分词。We had reached the tp f the hill befre midnight. 在半夜之前我们已登上了山顶。
1. 过去完成时的构成2）过去完成时的否定形式: had + nt + 过去分词。They hadn’t finished the wrk when we gt there.我们到那儿时,他们还没有完成工作。
1. 过去完成时的构成3）过去完成时的一般疑问句及其回答形式: 疑问句要把had提到句首；回答用Yes, 主语+ had. / N, 主语+ hadn’t. —Had he tld yu t g there earlier yesterday? 他昨天告诉过你早点儿到那儿吗? —Yes, he had. (N, he hadn’t.) 是的,他告诉了。(不,他没有。)
2. 过去完成时的用法1）过去完成时表示在过去某一时间或动作以前已经完成了的动作。 Helen had left her keys in the ffice s she had t wait until her husband came hme.海伦把钥匙忘到办公室里了，因此她不得不等她丈夫回来。
2. 过去完成时的用法2）表示动作在过去某一时间之前开始，一直延续到过去的这一时间，而且还可能继续下去的动作，常和fr, since构成的短语或引导的从句连用。By the time I left the schl, he had taught the class fr 3 years.到我毕业时，他已经教那个班三年了。
2. 过去完成时的用法3）放在said，tld，asked，thught，wndered等过去时动词的后面，表示在这些动作发生之前已经发生了的事情。My friend tld me that he had passed the exam.我的朋友告诉我，他已通过了考试。
2）当befre , after, as sn as 等引导的从句里的动作与主句的动作紧密衔接时，由于这些连词本身已经说明了两个动作发生的先后关系，因此两个动作均可用一般过去时表示。We had breakfast after we did mrning exercises.做完早操之后，我们吃早饭。
Cmplete the interview abut exercise and healthy eating with the crrect frm f the verbs and verb phrases.
Li Mei: Our schl 1)_________in a prgramme that prmtes healthy eating and exercise amng high schl students. I think it's a great initiative: it has helped me a lt.
Jurnalist: Hw has it helped yu?Li Mei: I used t be really lazy. Befre ur schl 2)__________the prgramme, I 3)_________fr years. Hwever, when the schl 4)__________ a 5-kilmetre running race, where the first prize was a trip t Hainan, l immediately 5)________The first running practice 6)________terrible. Afterwards, my face was cmpletely red and I was sweating a lt. Hwever, the next few times were much better, and I actually came third in the race.
Jurnalist: Sunds great! What abut healthy eating?Li Mei: When the prgramme started, ur schl began rganizing healthy cking classes. Previusly, I 7)__________much attentin t nutritin. I 8)__________t ck sme dishes, but thse were mstly unhealthy. Nwadays, I ften 9)___________ut new healthy recipes at hme. It's s much easier t cncentrate at schl nw!
Describe three things that yu had dne befre the schl term started. Write yur sentences n the lines. Yu may use the example belw t help yu.
I had written a cmpsitin befre the schl term started.(1)___________________________________________(2)___________________________________________(3)___________________________________________
Nw ask three classmates abut their descriptins. Select the mst meaningful ne and reprt t the class.
• Yu may ask and respnd like this:A: What had yu dne befre the schl term started?B: I had finished my il painting and sent it t my uncle. Hw abut yu?