八年级下英语第4单元单词解析讲义市公开课一等奖省赛课获奖PPT课件.pptx

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单词讲解,第1页,allow,allow sb to do sth,允许某人做某事,sb be allowed to do sth,某人被允许做某事,allow doing sth,允许做某事,allow sb in/out,允许某人进入,/,出去,Teenagers shouldnt be allowed to smoke.,不应该允许青少年吸烟。,辨析,let sb do sth,语气较弱，不能用于被动语态,第2页,guess,1 v.Can you guess how old he is?,2 n.If you dont know the answer,have a guess!,可数名词，猜测，猜测,主句含有,:I/We guess/think/believe/suppose,+,从句时，要进行否定前移,I guess he can swim.,I dont guess he can swim.,I guess he can swim,cant he?,第3页,deal,1,协议；交易,I did a deal with my parents on housework.,在家务上我与父母达成一项协议。2 big deal,主要事,3,处理，,deal with,与疑问词,how,连用,How will you deal with the homework?,第4页,communication,1 communicate with sb,与某人交流、沟通、联络,2 communicate to sb,向某人汇报、通知、传达,For better communication,I also communicate with him by phone.,为了更加好地沟通，我还和他电话交流。,第5页,argue,1,通常与介词,about,和,with,连用,不及物动词,argue with sb about sth,为某事与某人争辩,have an argument with sb,I had an argument with him.,第6页,cloud,Look at those dark clouds.Its going to rain.,看那些乌云，要下雨了。,cloud,（像云）尘土或烟雾,clouds of smoke,一团团烟,cloudy,多云,a cloudy sky,第7页,older/elder,1 older,指年纪较大、较老，也指较旧,Tom is two years older than John.,This book is older than that one.,2 elder,年长，只用做定语，不用作表语,He,is my elder sister.,We should respect our elders.,我们应该尊重长辈。,第8页,instead,1 instead,为副词，常放在句首或句尾,I will go instead.,2 instead of,为介词短语，后面接名词、代词，介词短语或动名词形式,She wrote to him instead of calling him.,=She didnt call him.She wrote to him instead.,第9页,nervous,比较级：,more nervous,最高级：,most nervous,be nervous of/about,对,感到担心,They are nervous of/about their test.,第10页,offer,1.offer sb sth/offer sth to sb,向某人提供某物,注：能够接收，也能够不接收,2.offer to do sth,提议去做某事,I offered her a book.,我给了她一本书。,He offered to help me.,他向我提供帮助。,辨析：,provide,强调为应付意外、突发事件、紧急情况等做好充分准备而“提供，供给”，多数情况是无偿。,provide sb with sth,为某人提供某物,provide sth for sb,第11页,proper/explain,He never explains anything properly.,他从来不好好解释任何事情。,explain oneself,解释，交代清楚,explain sth to sb,向某人解释某事,Alice usually explains the new words to us.,explanation n.,解释，说明,第12页,clear,1.,清楚易懂；晴朗,She spoke in a loud clear voice.,她说话声音既洪亮又清楚。,2.,清澈；透明clear water,清澈水；,clear glass,透明玻璃,3.clearly,清楚地，明白地,辨析：,clean,洁净；清洁；而,clear,表清澈,clean water,洁净水（强调没有尘污）,clear water,清澈水（强调清澈、透明）,第13页,return,1.return=come back/go back,return to=go back to=come back to,2.return,偿还；还给,return sth to sb/return sb sth,偿还某人某物,Please return the money to her.,注：是非延续动词，不能够与表示一段时间状语连用。,第14页,compete,competition,竞赛，比赛,competitor,参赛选手,enter a competition,参加比赛,compete with sb,against,for,Teams from many countries compete in the World Cup.,很多国家球队参加世界杯比赛。,第15页,opinion,1.,同义词：,idea;thought;view,Whats your opinion of my work?,对我工作您有什么意见？,2.in ones opinion,=I think,在某人看来,In my opinion,you are right.,我认为你是正确。,insist on ones opinion,坚持某人观点,第16页,skill,技艺，技巧,It needs a great skill to fly a plane.,开飞机需要很高技巧。,skillful,孰练,扩展：,Practice makes perfect.,Skill comes from practice.,第17页,quick,1 Have a quick look.,He took out his book quickly.,辨析：,fast:,形容词,/,副词，强调动作,速度,之快。,quick:,形容词着重动作,快速,发生或完成,即刻行动，豪不耽搁,soon:,强调时间，很快；马上，即很快以后将发生某个动作或某种情况。,Ill write to you as soon as possible.,第18页,continue,1,连续，继续存在，接名词、动名词、不定式或名词性从句做宾语,How far does the road continue?,这条路有多长？,continue doing sth,继续做原来事,=go on doing sth,continue to do sth,继续做某事（另一件事）,After finishing Unit 3,lets continue to learn Unit 4.,辨析：,continue;go on;last,第19页,continue,指进程在时间或空间上延续，有时也可指短暂停顿后继续进行。,He continued the work for three hours.,go on,：,go on to do sth,=continue to do sth,go on doing sth,=continue doing sth,last:,说明某一动作要延续一段时间。,She wont last long in that job.,那份工作她做不了多久。,第20页,compare,1 compare with,将,与,比较,compareto,把,比作,Dont compare yourself with others.,不要与他人比较。,Children are compared to national flowers.,第21页,crazy,1,不理智，疯狂,You must be crazy to walk at night with no lights.,2,热衷，狂热,She is crazy,about,pop music.,3 crazily adv.,疯狂地，热衷地,第22页,cause,Smoking can cause lung cancer.,吸烟能造成肺癌。,What was the cause of the accident?,You have no cause to complain.,辨析：,cause:,引发某种结果原因，后接,of,reason:,指决定做某事或采取某项行动理由。,excuse:,辩解，借口,第23页,perhaps,maybe=perhaps,位于句首或句末,Maybe/Perhaps it will rain tomorrow.,probably,可能性大于,maybe/perhaps.,He will probably come tomorrow.,possibly,较,probably,可能性小,在必定句里可能性很小，在否定、疑问句中与,can/could,连用，表示“不论怎样不”。,Could he possibly agree?,他莫非会同意吗？,第24页,人有了知识，就会具备各种分析能力，,明辨是非能力。,所以我们要勤恳读书，广泛阅读，,古人说“书中自有黄金屋。,”经过阅读科技书籍，我们能丰富知识，,培养逻辑思维能力；,经过阅读文学作品，我们能提升文学鉴赏水平，,培养文学情趣；,经过阅读报刊，我们能增加见识，扩大自己知识面。,有许多书籍还能培养我们道德情操，,给我们巨大精神力量，,鼓舞我们前进,。,第25页,第26页,