三動詞不定式1.動詞不定式作主語、表語、賓語或賓語補足語動詞不定式可以作主語、表語、賓語、賓語補足語,也可以和疑問詞構(gòu)成不定式短語作主語、賓語或表語。2.動詞不定式作狀語、定語(1)作狀語動詞不定式作狀語可以表示目的、結(jié)果、原因、程度等。動詞不定式作目的狀語,如果置于主句后,不定式前面常常不用逗號(出乎意料的結(jié)果除外)。①He ran fast to catch the bus.(目的狀語)②I returned home that day,onlyto find that everything was being in good order.(結(jié)果狀語,表示出乎意料的結(jié)果。如果表示順理成章的結(jié)果,用動詞-ing形式)③I am sorry to hear that.(原因狀語)④She wouldn't be so silly to say that.(程度狀語)(2)作定語動詞不定式作定語往往表示將來的動作。①He has nothing to do.②We reached an agreement to do the work together.③They made a plan to develop new products.Ⅰ.單句語法填空1.(2019·福建省百所重點校高三年級聯(lián)合考試)________ (use) a different mental approach might help explain why people with math anxiety struggle more with complex problems.答案:Using分析句子結(jié)構(gòu)可知,此處缺少主語,故使用動名詞using和后面的a different mental approach一起作主語。2.From our survey, we were happy ________ (find) the farmers' living standard greatly improved.答案:to findbe happy to do sth. “很高興做某事”。3.(2020·湖北省孝感市第一中學(xué)高三年級月考)Eating soil can produce more effective results ________ (compare) to eating slimming pills, claimed researchers from an Australian university.答案:compared句意:澳大利亞的一個大學(xué)的研究團隊聲稱,吃土可能比吃減肥藥的效果還好。分析句子可知,“compare”屬于非謂語,與其邏輯主語“eating soil”之間是動賓關(guān)系,故用過去分詞形式compared。4.________ (work) in several countries, the young man seems to have the experience we're looking for.答案:Having worked句意:在幾個國家工作過,這個年輕人似乎擁有我們所需要的經(jīng)驗。表示發(fā)生在主句謂語動詞之前的主動的動作,用having worked。5.You can trust him. He is a man ________ (know) throughout the business field for his honesty.答案:known句意:你可以信任他。他是一個在商業(yè)界因誠實而著稱的人。know與其修飾的名詞man之間構(gòu)成邏輯上的動賓關(guān)系,用過去分詞known。6.(2019·黑龍江牡丹江市一中高三摸底考試) ________ (face) with a difficult situation, Amold decided to ask his boss for advice.答案:Faced固定短語be faced with “面對著……”;該短語是對句子主語Amold的情況進行說明。句意:面對著艱難的形勢,Amold決定向老板征詢建議。7.Our English teacher started a WeChat Group ________ (communicate) with us after school.答案:to communicate句意:我們英語老師建了一個微信群,為了課后交流。表示目的,用動詞不定式形式。8.________ (cover) 840 square miles, the national park has beautiful lakes, mountains, and forests.答案:Covering句意:占地面積840平方英里,這個國家公園里有湖泊、山脈和森林。邏輯主語the national park與cover之間構(gòu)成主動關(guān)系,用動詞-ing形式,故填Covering。9.The experience ________ (gain) from failure is of great value to us.答案:gained句意:從失敗中獲得的經(jīng)驗對我們很有價值。 該動詞gain與其所修飾的名詞experience之間構(gòu)成邏輯上的動賓關(guān)系,用gained。10.A growing trend in China now gives customers the options ________ (pay) the bill by scanning a QR code or cash.答案:to pay句意:在中國現(xiàn)在有一個越來越火的趨勢,讓顧客選擇掃碼或者現(xiàn)金付賬單。修飾名詞options,用動詞不定式作后置定語。Ⅱ.單句改錯1.To make it easier to get in touch with us, you'd better to keep this card at hand.______________________________________________________________答案:去掉better后的to句意:為了更容易地和我們?nèi)〉寐?lián)系,你最好把這張卡片放在手頭上。had better do sth. “最好做某事”,為固定搭配。2.Seeing from the top of the hill, the garden looks more beautiful.______________________________________________________________答案:Seeing→Seenthe garden與see之間是被動關(guān)系,因此用過去分詞作狀語。3.Our company is going on very well. Employ dozens of local women, we produce handmade goods with unique designs that sell well overseas.______________________________________________________________答案:Employ→Employingwe是employ這一動作的執(zhí)行者,因此用現(xiàn)在分詞短語作狀語。4.(2019·福建省廈門一中高三第一次月考)Offered the opportunity to speak at the graduation ceremony made me overjoyed.______________________________________________________________答案:Offered→Being offered句意:被給予在畢業(yè)典禮上發(fā)言的機會讓我欣喜若狂。本句的謂語動詞是made,其前部分內(nèi)容應(yīng)該是主語且“我”應(yīng)是“被給予機會”,故應(yīng)用動名詞的被動式作主語。5.(2019·桂林市第十八中學(xué)高三第二次月考)With nothing leaving to burn, the fire became weak and finally died out.______________________________________________________________答案:leaving→left句意:剩下的沒有什么東西可燃燒,火越來越弱最后熄滅了。句中nothing和動詞leave之間是被動關(guān)系,故用過去分詞作賓補。