1、Unit 5 Signs语法梳理：情态动词should精讲精练(含答案)v 情态动词 shouldshould 为情态动词，意为“应该，应当”，没有人称和单复数的变化，后面接动词原形。1. 肯定句结构:主语+should+动词原形+其他.例：We should protect our Earth.我们应该保护我们的地球。2. 否定句结构:主语+shouldnt+动词原形+其他.例：You shouldnt eat in the library. 你不应该在图书馆里吃东西。(与Dont eat in the library.意思相近,但以Dont开头的否定祈使句语气更强烈)3. 一般疑问句结构：
2、Should+主语+动词原形+其他?例：Should he do this? 他应该做这件事吗?4. 特殊疑问句结构：特殊疑问词+should+主语+动词原形+其他?例：What should we do to protect our Earth? 我们应该做什么来保护我们的地球?Why should people save water? 人们为什么应该节约用水?【考题精练】一、用所给单词的适当形式填空。1. There isnt much water on our Earth. We (should) (waste) water. We (should) (reuse) it.2. The
3、floor is wet. You (should) (are) careful.3. Look at the man. He is (smoke). He shouldnt (smoke) here.4. Bobby always (throw) banana (skin) on the ground. He (should) (put) them in the bin.5. (save) energy, we shouldnt (drive) too much.6. The bus (come). We should (stand) in line and wait.二、按要求完成句子。1
4、. We should move some factories away from our city.改为否定句 对画线部分提问 2. Tom should use too many plastic bags.改为否定句 改为一般疑问句 对画线部分提问 三、看图，完成对话。1. Mike: Look that sign over there. it mean?Su Hai: It you cant here.Mike: Oh, I see.2. Tom: Dad, the over there “D ”?Dad: No, it . It means people cant here.Tom:
5、Oh, I see.3. Tim: Can I my dog the restaurant?Waitress: No, you . Look at the sign. It means“ pets”.Tim: OK. Im sorry.四、阅读理解。It is Saturday afternoon. Liu Tao and his friend David are taking a walk in the park. There are many public signs in it. They mean different things. Liu Tao knows a lot about
6、them. Suddenly, they see a short man walking on the grass. Liu Tao points at the sign on the grass and says to him,“Sir, look at the sign! You cant walk on the grass.”The man smiles and says,“You are right, young man. But Im the park keeper. Im looking after the grass.”阅读短文,判断正(T)误(F)。( )1. Liu Tao
7、and David are taking a walk on the grass.( )2. The boys can see many public signs in the park.( )3. Liu Tao knows a lot about the public signs.( )4. The short man cant see the public signs in the park.( )5. The short man works in the park.参考答案一 、1 . shouldnt waste; should reuse解析 : 句意 : 我们地球上的水资源不多了
8、，我们不应该浪费水 ,我们要重复利用水。2 . should be 解析：should后面使用动词原形，故填should be。3 . smoking; smoke 解析: 第一空为现在进行时态,is后面接动词ing形式, 情态动词should后面接动词原形。4 . throws; skins; should put 解析：根据“always”可知,句子应使用一般现在时,香蕉皮为banana skin,skin作为果皮时为可数名词。5 . To save; drive解析: 动词不定式作目的状语6 . is coming; stand 解析 : 第一空is coming表示公 共汽车就要来了。
9、第二空,表示“我们应该排队”,should后用动词原形stand.二、1. We shouldnt move any factories away from our city.What should you do?2.Tom shouldnt use too many plastic bags. Should Tom use too many plastic bags?What should Tom use?三、l.at,What does,means,eat or drink 2.does,sign,mean,Danger,doesnt,smoke3.take,into,cant,No四、1
10、. F 解析:通读全文可知, Liu Tao知道很多公共标识的意思，也告诉他人不可以践踏草地，由此推断，他和David 并不是在草地上散步。故填 F。2. T 解析:由“There are many public signs in it.”可知，他们可以在公园看见许多公共标识。故填T。3. T 解析:由“Liu Tao knows a lot about them.”可知, Liu Tao 非常了解这些标识。故填T。4. F 解析: 由“The man smiles and says,You are right, young man. But Im the park keeper. Im looking after the grass.”可推断，矮个子男人并不是没有看到公共标识。故填F。5.T解析：由“.But Im the park keeper.Im looking after the grass.”可知，矮个子男人是公园管理员，在公园里工作。故填T。
