经典句型课件(unit1).ppt

Unit 1 Great Scientists 经典句型讲解,1杰克每次来城里都会来看望我。 Jack will drop in on me _ _he comes to town. 2我只有找到工作才能有足够的钱继续大学的学业。 _ _ _ _ _ _ _ _ _ _ _to continue my studies at college. 答案 1.every time 2Only if I get a job can I have enough money,考点1 So many thousands of terrified people died every time there was an outbreak. 每次爆发霍乱时，都有大批惊恐的老百姓病死。 every time 引导一个时间状语从句，相当于whenever，意思是“每当”。 (1)名词词组作连词用，引导时间状语从句的有：every time，each time，any time，the last time，next time，the first time，the moment，the second，the minute，the hour，the day 等。 (2)有些副词，如directly，instantly，immediately 也可用作连词，引导状语从句。,【典例填充】 1. _ _I catch a cold，I have pains in my back.我每次感冒背就痛。 答案 Every time 2She let out a cry _ _she saw the snake.她一看到蛇就叫了起来。 答案 the moment 3I left _the clock struck 5. 钟刚敲了五下我就离开了。 答案 immediately,考点2 Only if you put the sun there did the movements of the other planets in the sky make sense. 只有当你把太阳放在中心位置上，天空中其他行星的运动才能说清楚。 only 修饰if 引导的条件状语从句。“only状语”放在句首时，句子要用部分倒装结构；only 加主语放在句首时，句子不倒装。 Only in this way can you get to know her.,if only表示“要是该多好”，指一种不能实现或难以实现的愿望。用于虚拟语气，表示过去不能实现的愿望，含有后悔、惋惜之意，谓语动词使用had done形式。表达现在不可实现的愿望，谓语动词用一般过去时；表达将来难以实现的愿望，谓语动词用“would/could等情态动词动词原形”或一般过去时。 If only I knew her. If only I had been here last night. If only I would be here tomorrow, but I will have to go to school.,【典例填充】 _ 只要红灯一亮，就表示有危及职工的险情。 答案 Only if the red light comes on is there some danger to employees.,1_you talk to someone or write a message，you show your skills to others. AAt times BSome time CEvery time DThe time 解析 句意：每次你同别人谈话或写信息时，把你的技巧显露出来。every time “每当的时候”，引导时间状语从句；其他三项都不能引导时间状语从句，故可排除。 答案 C,2Dont stop_you meet with a word you dont understand. Aat the time Beach time Cby the time Dsometimes 解析 根据句子结构可知，选用的短语应起连词作用，引导时间状语从句，故选用each time。at the time 为介词短语，不能引导句子；sometimes 为副词，也不能引导时间状语从句；by the time 可以引导时间状语从句，但其主句常用完成时态。故选B项。 答案 B,3I didnt invite him to the party but he came anyway and got completely drunk. _he hadnt come! The party could have been a success. AHow come BIf only CWhat if DOnly if 解析 If only.! “要是就好了！”，其后的句子常用虚拟语气；How come “为什么，怎么会”；What if “要是会怎么样”；Only if “只要，只有”。句意：我没邀请他参加聚会，但他却来了，而且喝得酩酊大醉。要是他不来就好了，那样聚会就会举办得很成功。根据句意应选B项。 答案 B,4Only after you have reached eighteen _ the army. Ayou can join Byou can join in Ccan you join Dcan you join in 答案 C,能力提升,.单词拼写 1There are many new _(科学的) discoveries. 答案 scientific 2He smiled suddenly, _(露出)a set of amazing white teeth. 答案 exposing 3A dropped cigarette is being _(指责) for the fire. 答案 blamed 4The government yesterday _(宣布)to the media to create a million new jobs. 答案 announced,5We must take _(积极的)steps to deal with the problem. 答案 positive 6It took the jury some time to reach the _(结论) that she was guilty. 答案 conclusion 7The family has sold most of its shares and will lose _(控制)of the company. 答案 control 8Black walls _(吸引)a lot of heat during the day. 答案 absorb,9The writer personally _(捐助)$ 5000 to the earthquake fund. 答案 contributed 10We got excited when our school football team _(击败)theirs at yesterdays game. 答案 defeated .选词填空 put forward；be strict with；apart from；contribute to；make sense,1Do you agree with the plan he _ _in the discussion? 答案 put forward 2You _ _ _your students. 答案 are strict with 3_ _what he said，you also need to ask for your parents advice. 答案 Apart from 4Cigarette smoking is a major factor _ _lung cancer. 答案 contributing to,5Dont waste time thinking about a sentence which doesnt _ _. 答案 make sense .易错补练 1Most people didnt accept the theory when it was first_. Aset about Bset off Cput forward Dput out 解析 句意：当那个理论刚被提出时，大多数人不接受。set about 着手；set off 出发；put forward 提出；put out 扑灭。 答案 C,2I dont doubt_the medicine is_effect for cancer. Athat；a cure of Bif；cure of Chow；a cure for Dthat；cure for 解析 I dont doubt 后接that 引导的从句，意为“我不怀疑”；a cure of effect for.“对的有效治疗”。 答案 A,3The parents didnt know_to blame for the spoiled child. Awho Bwhen Chow Dwhat 解析 考查“疑问词不定式”的用法。blame 的常用结构为blame sb. for (doing) sth.。即本题中blame 后缺少宾语，此处用who 代替whom 作blame 的宾语，相当于一个宾语从句who the parents should blame for the spoiled child。句意：这对父母不知道谁该对这个被溺爱的孩子负责。 答案 A,4Mr. Bake is a professor of physics. _，he is a famous writer. AExcept BApart from CIn addition DBeside 解析 考查介词短语辨析。分析句子结构，此处需要一个副词，而A、B、D三个选项均为介词，后面需接名词、代词或动名词作宾语；in addition 表示“此外”，为副词短语，当其为介词时，后面需接to，构成in addition to(besides)。 答案 C,5There are so many new words and expressions in the article that the students cant make any_of them at all. Aidea Bsense Cuse Dmeaning 答案 B,.单元语法(过去分词做定语和表语) 1The body of US. diplomat Victoria DeLong，the first American reported_by the earthquake in Haiti，has arrived in Los Angeles. Akilled Bkilling Cbeing killed Dhaving killed 解析 句意：被报道第一位在海地大地震中丧生的美国外交官Victoria DeLong 的遗骸已经运抵洛杉矶。由于kill和the first American 之间为动宾关系，故用过去分词形式。being killed 是现在分词的被动式，强调被动的动作正进行。 答案 A,2The man_of shooting 6 school children was caught by Beijing police，the XINHUA News Agency reported on Friday. Abeing suspected Bsuspecting Csuspected D.to be suspected 解析 句意：新华社周五报道说那个涉嫌枪杀了6名学生的人已被北京警方抓获。suspect 和the man 之间为动宾关系，故用过去分词形式作定语。 答案 C,3The survery_in our school last month shows that about 2 percent of the students are addicted to Internet games. Aconducted Bhaving been conducted Cconducting Dto be conducted 解析 动词conduct 与主语the survey 之间存在着动宾关系，所以需用被动形式，依据last month 可知，该动作发生在过去，故C、D两项不正确。B项是现在分词的完成被动式，通常不能作定语。conducted 在此作定语修饰the survey，相当于定语从句which was conducted。 答案 A,4About 30 men lifted a school bus to save a pregnant woman _ by the bus，_ it possible for the baby to be born before the woman died of her injuries. Astruck；making Bstriking；made Cstruck；made Dstriking；making 解析 strike 和woman 之间为被动关系，故用过去分词短语struck.作定语；而make 和