九年级英语全册 Unit 6 When was it invented（第2课时）Section A（3a3c）课件 （新版）人教新目标版

第二课时Section A (3a3c)九年级上册人教版英语Unit 6When was it invented?1. by accident 意为“偶然地，意外地”。同义词组为 by chance。eg: I met her by accident in a crowded bus.我意外地在拥挤的公共汽车上遇见她。2remain 动词，意为“剩下；停留；逗留”等。 【拓展】remain 用作连系动词时，意为“保持；仍是”，后接形容词、名词、分词或介词短语作表语。eg：The room remains cool all summer.这个房间整个夏天保持凉爽。3【辨析】some time，sometimes，some times与sometime(1)some time 名词短语，意为“一段时间”，常与延续性动词连用，对它提问用how long。(2)sometimes 频度副词，意为“有时”，表示动作发生的频率，多与一般现在时连用。(3)some times 名词短语，意为“几次；几倍”，对它提问用how many times。(4)sometime 副词，意为“某时”，常用于过去时或将来时，对它提问用when。4【辨析】take place 与 happentake place 表示“发生”时，与 happen 近义，但也有区别。take place 常指经过安排的，而happen 常常是偶然发生的，它们都只用于主动语态，没有被动语态。eg：Great changes have taken place in my hometown.我的家乡发生了巨大变化。Do you know what will happen in one hundred years? 你知道一百年后会发生什么吗？【拓展】take place 还可意为“举行”，相当于hold，而hold有被动语态。eg：The World Cup takes place every four years.The World Cup is held every four years.世界杯每四年举行一次。5It is said that.意为“据说”，相当于People say.It is believed that.意为“人们相信，认为”相当于People believe.。以上两个是英语中的常见句型，都是以it作形式主语，在被动谓语后接that引导主语从句。【其他重点词组归纳】fall into 落入；陷入not.until. 直到才less than 少于the popularity of. 的普及without doubt 毫无疑问 一、根据句意及汉语提示写单词。1Can you help me (烧开) some water?2The country was without a (统治者) after a big war.3China does a lot of (贸易) with many countries.4Without (怀疑)，G20 Meeting was quite successful.5Look！Only a few apples (剩余) on the tree.boilrulertradedoubtremain二、根据句意用所给词的适当形式填空。6It is (believe) that aliens live in some places far from the earth.7In (west) countries，people use forks and knives to eat.8Tea，the most popular drink is an (accident) invention.9The (nation) park lies in the mountain.10The cake (smell) delicious and I want some.believedwesternaccidentalnationalsmells三、单项选择。( )11.Whats the matter?He hurt his fingers _ while cutting vegetables.Aby accident Bby mistake Cin time Don time( )12.It has been raining for days.When will it stop?It is _ that the rainy season will be longer than last year.(2016，宜昌)(阿凡题：1074213)Asays Bsaid Csaying Dto sayAB( )13.Lao Shes Teahouse _ the changes in Chinese society over fifty years.(阿凡题：1074214)Adescribes Bimproves Cprepares Dcorrects( )14.In the past few years，great changes _ in Lianyungang.(阿凡题：1074215)Atake place Btook placeChave taken place Dhave been taken place( )15.They will stay in the countryside for _.(阿凡题：1074216)Asome time Bsometime Csome times DsometimesACA四、根据汉语意思完成下列句子。16据说今天一辆公共汽车落入了湖中。Its said that a bus a lake today.17我是偶然知道这个消息的。I knew the news 18毫无疑问，他一定会尽力帮你的。 ，hell try his best to help you.fell intoby accidentWithout doubt19在野营时，我们在野火上烧饮用水。When we camped，we water an open fire.20直到交通指示灯变绿，我们才可以过马路。We cross the road the traffic lights turn green.boiledovercantuntil