Unit 3 Could you please tell me where the restrooms are【学习目标】1、熟记本节单词，达到灵活运用。2、加强听力的练习，提升能力。【预习合作探究】1.inexpensive 廉价的【解析】expensive adj.昂贵的（反） inexpensive = cheapWe need to stay in an _(expensive) hotel so that we can save some money.2.uncrowded 不拥挤的crowd (1)n 人群 a crowd of books 一堆书(2)v 拥挤 crowded adj. 拥挤的 （反） uncrowded 不拥挤的be crowed with 被挤满( ) Its Sunday today. The supermarket is crowded _ people.A. by B. with C. of D. For【拓展】 派生法（Derivation）在一个单词前面或后面加上一个词缀构成新词，这种构词法叫做派生法。加在单词前的词缀叫前缀，加在后面的词缀叫后缀。前 缀示 例un- （ 不、非，表示否定） unfriendly, unpleasant, uncomfortabledis- （ 不、非，表示否定） disadvantage, dishonest, disagreebi- （ 两个、双边的） bicycleinter- （相互、交互、在一起） interview, international, Internetre- （ 又、再、重新） review, return, rewrite3.Convenient【解析】convenient adj. 方便的 be convenient to/for sb. 对于来说很方便Its convenient fro sb. to do sth 对于某人来说做某事是方便的。( ) Come to see me whenever it is _ you. A. convenient to B. conveniently to C. convenient with D. conveniently with4.its beautiful, too.它也漂亮。【解析】too + 动词原形 “ 太” too scared 点拨 (1)tooto意为“太以致不能”，too后接形容词或副词原级。This morning I got up too late to catch the early bus.今天早上我起床太晚，没赶上早班车。(2)tooadj./adv.for sb to do sth表示“对某人来说，太而不能做某事”。The box is too heavy for me to carry. 这个盒子对我来说太重了，我搬不动 拓展 (1)tooto中的too前面有否定词(如never)时表肯定。Its never too late to learn. 活到老，学到老。(2)tooto 表示否定时，可与 sothat 和 notenough to do 相互转换。The boy is too young to go to school.The boy is so young that he cant go to school.The boy isnt old enough to go to school.这个男孩太小，还不能上学。You are_young to understand it. A too B very C much D soThe boys were too tired to walk on. （同义句）The boys were_tired_they couldnt walk on.【拓展】also /too/as well/ either三者都可表示“也”，但它们在句中的位置不同，用法也不同。(1) too一般用于肯定句和疑问句句末，并用逗号与前面的句子隔开。 We like singing, too. 我们也喜欢唱歌。 主语 + too 肯定句中的“也” so +助动词/be+ 主语 完整的肯定句后加too，且要用逗号隔开。 He is a good student. Me too./ So am I / I m a good student, too. Peter has never been to a water park. _.A. I havent neither B. I havent too C. Me too D. Me neither(2) also常位于句中，放在实义动词前，be动词、助动词、情态动词之后。 He can also tell jokes. 他也会讲笑话。(3) either一般用于否定句末，并用逗号与前面的句子隔开。 Jane doesnt know the old man, either. 简也不认识这位老人。【练习】用either, also , too, as well 填空Tom can sing this song . I can sing it, _.Tom can sing this song, I can sing it _.Tom can sing this song, I can _sing it.Tom couldnt sing this song, I couldnt , _.（ ） He cant swim .I cant,_. A. too B. also C. either D. neither5.Can you tell me where theres a good place to eat? 你能告诉我哪有吃饭的好地方吗？【解析】a good place to eat 吃饭的好地方（动词不定式做定语修饰place） a good place to do sth一个做某事的好地方( ) The 2020 World Expo site(世博会现场) is a good place _. A. visiting B. to visit C. visited D. to visiting