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1、广东省阳东广雅中学八年级英语下册 Unit 3 What were you doing when the ufo arrived Period 2 Section A(2a-3b)预习学案（无答案） 人教新目标版课时目标导航知识目标：an unusual experience, around, strange, follow, kid, follow it to see, be surprised, the Museum of Flight, be amazing句型：1. I was walking down the street when a UFO landed right in fro
2、nt of me.2. While it was looking at the souvenirs, the shop assistant called the police.3.You can imagine how strange it was!能力目标：1.理解并能正确运用过去进行时态表达过去正在发生事情。 2能区别以when 和while引导的时间状语从句。 3能初步理解感叹句的用法。预习过程：【预习闯关一】预习课本 Page18-20 of unit 2Read the new words and recite them .你很轻松闯关，顺利得到一颗星_.【预习闯关二】预习课本Sec
3、tionA(1a)of page10 of unit 2. Translate the following phrases into English 1航天博物馆 _ 2.买纪念品 _3. 沿着街道走 _ 4. 看见某人做某事 _5. 报警 _ 6， 起飞，脱下_7，在中心街着陆_ 8，一次不寻常的经历_9，就在我前面_ 10，跟随某人_闯关成功的同学奖励自己一颗 !_.【探索闯关】1,The girl was shopping when the alien got out. While the girl was shopping, the alien got out. when 与while
4、区分： （1）“当的时候”，如后面连接的动词为进行时态，则用while多于用when。而when通常与瞬间性动词或延续性不强的动词连用。 （2）如果while前后的动词都是进行时态，while可译为“与此同时” I was reading while my brother was drawing. （3）当while前后的句子描述的情况相对或相反，while可译为“而”，while更强调并列的对比而非转折。 e.g. I am out-going while my sister is quiet and shy. 总之，when表示做某种动作的时间或瞬间，由其引导的时间状语的时态如果是一般过去
5、时，其主句通常要用过去进行时。while表示略长的一段时间，由其引导的时间状语从句用过去进行时，而主句时态根据实际情况而定。用when，while填空 1. _ the alien was in the museum , I called the police . 2. The boy was walking down the street _ a UFO landed . 3. _ the alien was visiting the museum , the boy called the TV station . 4. I was cleaning my room _ the fire b
6、roke out . 5. _ Linda was shouting his name , some people looked at her . 6. _ Linda finally saw Davy , he was jumping with a dog .2. What were you doing when the UFO arrived? 飞碟到达时,你正在做什么？(1) 句中arrive意思是“_”,是不及物动词，常和介词in和at连用，其中in后接表示大地点的名词(如: 洲、国家、大城市等) ,而at后接表示小地点的名词(如：村庄、学校、车站等)。He arrived in Lo
7、ndon last Monday When did he arrive at the station? 表示“到达”的动词还有get和reach。其中get是不及物动词，常和介词to连用，而reach是及物动词，必须带有自己的宾语。When did you get to/reach/ arrive in Hong Kong?3, While the boy was walking down the street, the UFO landed.walk down / along 意思是_ land名词陆地Most animals live on land. 动词 着陆The plane lan
8、ded safely.活学活用 根据汉语或首字母提示完成句子。1 They were the first men to l_on the moon.2 It was good to be back on _(陆地)4，I had a very unusual experience on Sunday.星期天我经历了一件不寻常的事儿。1 unusual为形容词，意为“异常的，不寻常的“，其反义词为usual。2 experience在这里做可数名词，意为“经历,经历的事”。experience做不可数名词，意为“经验”experience作动词，意为“经历，体验，感受”5，At around t
9、en oclock in the morning,I was walking down the street when a UFO landed right in front of me.大约上午10时，我正沿街走时，突然一架飞碟降落在我面前。（1）around在这里表示“大约”，相当于about。（2）around做副词还有“在四周，周围”等含义。活学活用 词语释义He got there around 4:00 p.m.A.round B.at C.about D.over6， You can imagine how strange it was!你可以想象它有多么奇异！（1）此句含有感叹
10、句how srange it is的宾语从句。主句为You can imagine。imagine为动词，意为“想像，设想”strange为形容词，意为“奇怪的”。（2）How strange it was!是一个感叹句，意为“这句多么令人惊奇呀！”由how引导的感叹句，其构成为“How+形容词或副词+主语+谓语！”how作状语，修饰形容词、副词或动词。7，I follwed it to see where it was going,and was very surprised when it went into a souvenir shop.我紧跟着他（外星人）看他要去哪里，当看到他进入一
11、家纪念品店时，我感到非常惊讶。follow为动词，意为“跟随”，与go after同义。follow sb to do sth意为“跟着某人做某事”。（1）follow作动词。意为“理解，明白”，与understand,catch同义。 (2 ) following为形容词，意为“接着的，下述的”.8， Isnt that amazing1那难道不令人惊讶！（1）这句话使用了否定疑问句的语序，但其意义并非询问而是感叹，相当于Thats amazing.“那令人惊异“。使用这种语序比陈述句语序语气更强烈，更丰富。（2）amazing为形容词，意为“令人惊异的”，主语为事或物;而amazed意为“感到吃惊的”，主语常为人。这一步能闯关成功的同学真了不起，你可以得到两颗星_本次预习你一共得到了几颗星_
