Lesson 24: Unit Review 习题答案：I. A 1.take a taxi 2.sending an e-mail 3.flying kites 4.take a picture 5.put; inB. 1.quick; quickly 2.slowly; slow 3.quietly; quiet 4.loud; loudly 5.easy; easily 6.careful; carefullyC. are, take, quickly, scared, hurts, hurts, breaks, hurtII. A. 1.is 2.are 3.Is 4.Are 5.areIII. B. G A D C F IV. B. //dog, what//dress, office, rest, some// order, walk, talk//blouse, eraser//good, book, foot//show, English, shirt// June, room, zoo//usually, televisionthere be 结构的用法。要注意下列八种情况：(1)“There be + 主语 + 地点（或时间）状语”表示“这里有……”。 there 是引导词，无词义， be 是谓语动词，主语位于 be之后。主语是单数，动词变为 is ，是复数，be 变为 are 。如：There is a boat in the river. 河里有条船。There are some flowers near the house. 房子附近有些花。(2) There be 结构中，主语若是不可数名词，谓语动词be 用单数 is 。如： There is some water in the glass. 杯里有些水。There is some bread on the table. 桌上有些面包。(3) There be 结构中，若主语不止一个， be 的形式一般根据第一个主语来定，单数或不可数名词用 is ，复数用 are 。在英语中这叫“就近原则”。如：There is a house, four trees and some hills in the picture.画里有一幢房子，四棵树和几座小山。There are some books, two pens and a ruler on the desk. 书桌上有些书，两支笔和一把尺。(4) There be 结构的否定式，是在 be 后加 not 。如：There is not a car in the picture. 画里没有小汽车。 There are not any children in the river. 河里没有孩子。(5) There be 结构的一般疑问句，是将 be 提到 there 前，回答用简略形式。如：-- Is there a map on the wall? 墙上有地图吗？-- Yes, there is. (No, there isn’t.) 是的，有。（不，没有。）-- Are there any birds in the trees? 树上有鸟吗？-- Yes, there are. (No, there aren’t.) 是的，有。（不，没有。）(6) 若对 there be 结构中的主语提...
