英語(yǔ)精品人教選擇性必修三Unit1Grammar——不定式作表語(yǔ)

1、Section H Grammar不定式作表語(yǔ)單元語(yǔ)法 一圖貫通形式不定式作表語(yǔ)d帶2的不定式句中出現(xiàn)了 d<)的某種形式，如 do, doe-, did 等不帶g當(dāng)主語(yǔ)、了被以動(dòng)詞，空.一的不定式一作謂語(yǔ)的定語(yǔ)從句修飾時(shí)，其表語(yǔ)的不定式符號(hào)可省略與動(dòng)名詞作表語(yǔ)的區(qū)別不定式表示具體的或?qū)⒁l(fā)生的動(dòng)作動(dòng)名詞表示抽象或習(xí)慣性的動(dòng)作語(yǔ)法整體突破語(yǔ)境理解合作探究一、動(dòng)詞不定式作表語(yǔ)的概念和用法動(dòng)詞不定式是非謂語(yǔ)動(dòng)詞的一種，可以放在系動(dòng)詞be之后作表語(yǔ)，通常說(shuō)明或 解釋主語(yǔ)的內(nèi)容，也可表示將來(lái)的動(dòng)作。合作探究閱讀下列句子，體會(huì)動(dòng)詞不定式的用法。Ybur work is to finish a re

2、port this morning.你今天上午的工作是完成一份報(bào)告。His dream is to be a doctor after he grows up.他的夢(mèng)想是長(zhǎng)大后當(dāng)一名醫(yī)生。First of all, the most important thing is to conquer yourself.首先，最重要的事情是戰(zhàn)勝自己。Always keep it in mind that your main task is to get this company running smoothly.一定要銘記你的主要任務(wù)是讓這個(gè)公司平穩(wěn)地運(yùn)轉(zhuǎn)。Maybe Lippi liimself ca

3、miot answer tliis question, so the only tiling he can do is (to) resign.也許里皮也無(wú)法回答這個(gè)問(wèn)題，因此他最終只能選擇辭職。What the plan does is (to) ensure a fair pension for all.這個(gè)計(jì)劃要貫徹的就是保證大家都有一份合理的退休金。自主發(fā)現(xiàn)動(dòng)詞不定式是非謂語(yǔ)動(dòng)詞的一種，可以放在系動(dòng)詞be之后作表語(yǔ)，通常說(shuō)明或 解釋主語(yǔ)的內(nèi)容,也可表示將來(lái)的動(dòng)作。二、與動(dòng)名詞作表語(yǔ)的區(qū)別不定式作表語(yǔ)時(shí)，表示具體的或?qū)⒁l(fā)生的動(dòng)作。當(dāng)主語(yǔ)是aim, duty, puipose, diea

4、m, goal, hope, idea, plan, suggestion 等為中心詞的名詞詞組或以 what 引 導(dǎo)的名詞性分句時(shí).，不定式說(shuō)明主語(yǔ)的內(nèi)容，這時(shí)主語(yǔ)和表語(yǔ)交換位置，意思不 變。而動(dòng)名詞作表語(yǔ)時(shí)則表示抽象或習(xí)慣性的動(dòng)作，說(shuō)明主語(yǔ)的性質(zhì)、狀態(tài)，具 有形容詞的特征。1 .不定式和動(dòng)名詞作表語(yǔ)都相當(dāng)于一個(gè)名詞作表語(yǔ)，說(shuō)明主語(yǔ)“是什么”。My job is to paint the wall.我的任務(wù)是粉刷這堵墻。What I want to say is to put off the meeting.我想說(shuō)的是推遲會(huì)議。You must keep it in mind that yo

5、ur work is serving the people.你必須牢記你的工作就是為人民服務(wù)。2 .不定式通常指一次性、具體的或?qū)⒁l(fā)生的動(dòng)作；動(dòng)名詞則指抽象或習(xí)慣性的 動(dòng)作。His goal is to become a pop singer.他的目標(biāo)是成為一名流行歌手。Yotu- work now is to look after the old man.你現(xiàn)在的工作是照看這個(gè)老人。Old Tom's present job is sweeping streets.老湯姆目前的工作是掃大街。鞏固內(nèi)化補(bǔ)全句子My cousin's wish is to become a po

6、p singer.我表哥的愿望是成為一名流 行歌手。My task tills momiiig is to serve as a guide.我今天上午的任務(wù)是充當(dāng)導(dǎo)游。 What I want is to visit the History Museum now.我所想的就是現(xiàn)在去參觀歷史博物館。Is your suggestion to start the work right now?你的建議是馬上開(kāi)始工作嗎？The only way for us to survive isHvg hl hannoiiy with nature.我們生存的唯一方式就是與自然和諧相處。【名師提醒】當(dāng)不定式

7、的邏輯主語(yǔ)是句子的主語(yǔ)時(shí)，表示主語(yǔ)的責(zé)任、義務(wù)或?qū)?lái)的行為；當(dāng) 不定式的邏輯主語(yǔ)不是句子的主語(yǔ)時(shí)，表示主語(yǔ)的內(nèi)容或性質(zhì)。We are to keep the order in the street.我們將去街上維持秩序。（將來(lái)時(shí)）Our job is to keep the order in the street.我們的工作是維持街上的秩序。（系表結(jié)構(gòu)）語(yǔ)言內(nèi)化穩(wěn)步提能課堂實(shí)踐應(yīng)用I .用括號(hào)內(nèi)所給動(dòng)詞的適當(dāng)形式填空1 .My next work is to construct (constmct) a nest and anchor it in a tree.2 .You know, my

8、goal is tQ Jose (lose) 150 pounds in the coming year.3 .When I was 13 my only puipose was tQ become (become) the star on our football team.4 .The first thing he did was (to) find (find) shelter from the freezing wind and snow.5 .Another way to hide a message is tQ jise (use) symbols to stand for spe

9、cific letters of the alphabet.6 . At college, Obama didn't know he was to become (become) the first black president of the USA.1 .One of the most damaging things a parent could do was (to) punish (punish) their children for poor marks.8 .Now that the factories were closed down, the city's ne

10、xt step was tQ glean (clean) the polluted river.9 .While the clip might look like part of a new ad campaign, Bridges said the only goal was tQ show (show) generosity and sympathy.10 .The puipose of education is tQ develop (develop) a fine personality in cliildren.11 .補(bǔ)全句子1 .The most important thing

11、about vlogging is to tell a Rood story.拍攝視頻博客最重要的一點(diǎn)在于講一個(gè)好故事。2 . Theultimate goal of the research istQ prevent people f oin getting th® disease.這項(xiàng)研究的最終目的是防止人們患這種病。3.1 gradually understand what we all need is to think jnoig about qustomeis.我漸漸明白我們需要做的是多為顧客考慮。4.The puipose of the poster is to persuade customers to buy the pioducts.這則海報(bào)的目的是說(shuō)服顧客購(gòu)買該產(chǎn)品。5 .For many computer progianimei's, their true pleasure is to crea