七年级英语上册Unit 5课文讲解1.Appreciate the beauty of nature. 欣赏自然之美。用法详解beauty为名词，译为“美丽；美人”；其形容词形式为beautiful（美丽的）。2.Compare and contrast 比较和对照常见搭配compare A with B 把A和B进行比较Compare . to . 把.比作.Compare with/ to . 与.相比Eg: Parents shouldnt compare their children with other children.父母不应该把他们的孩子和其他孩子进行比较。Shakespeare compared the world to a stage. 莎士比亚把世界比作舞台。Compared with/to him, Im just a beginner. 和他相比，我只是一个初学者。3.It has little rain here, so its very dry. 这几乎没有雨.易混辨析a few、few、a little与little区别：a few “一些；少许” 后接可数名词复数，表肯定few “几乎没有”后接可数名词复数，表否定a little“一些；少许”后接不可数名词，表肯定little “几乎没有”后接不可数名词，表否定Eg: There are a few apples in fridge, you can eat one.冰箱里有一点苹果，你可以吃一个。There are few apples in fridge, we should get some. 冰箱里要没有苹果了，我们应该去买一些。There is a little milk in fridge, you can drink some. 冰箱里有点牛奶，你可以喝一些。There is little milk in fridge, we should buy some. 冰箱里没有牛奶了，我们应该去买点。4.It is home to many plants and animals. 它是许多动植物的家。用法详解此句中to many plants and animals为动词不定式作home的后置定语。5.You can find many kinds of sea animals in it. 你可以在里面找到许多种类的海洋动物。用法详解 kind (名词) 种类 (形容词) 善良的 常见搭配 all kinds of 各种各样的； a kind of 一种；different kinds of 不同种类的； kind of 有点（后加形容词）Eg: There are all kinds of books in this library.在这个图书馆中有各种各样的书。The panda is kind of cute. 这只熊猫有点可爱。He is a kind boy. 他是一个善良的男孩。6.There is not enough air on the top of them. 顶部没有足够多的空气。用法详解enough为形容词，译为“足够的；充足的”，Enough在修饰名词时位于名词前。Enough为副词时，常用来修饰形容词/副词/动词，此时enough要位于所修饰词之后。常见搭配enough for sb. 对某人来说足够.Enough + 名词 + to do sth. 有足够的.可以做某事Not + 形容词/副词 + enough + to do sth. 不够.做某事Eg: Maths is not easy enough for me. 数学对我来说不容易。I have enough time to finish my homework. 我有足够多的时间去完成我的作业。The book isnt easy enough for me to read. 这本书太难了，我看不懂。7.What is a desert like? 沙漠什么样？用法详解句式“What + be动词 + sth. /sb. like?”译为“某物/人是什么样的？”，该句式在询问某人时常常是询问人的性格、品质等。注意此句中的like为介词，译为“像”Eg: - Whats your room like? 你的学校是什么样的？- Its small and nice. 它小且漂亮。- Whats your sister like? 你姐姐怎么样？- She is very friendly. 她很友好。知识拓展：在询问“某人外貌”时，常用“What do/does + sb. + look like?”的结构询问。Eg: - What does your sister look like? 你姐姐长什么样？- She has big eyes. 她长着大眼睛。8.Do you have any questions about deserts? 你有关于沙漠的问题吗？用法详解any在表示“一些”时，常常位于否定句或疑问句中，而肯定句中常用some。Eg: I have some books in my room. 我房间里有一些书。Do you have any books in your room? 你房间里有一些书吗。常见搭配ask some questions 问一些问题Answer some questions 回答一些问题易混辨析problem与question区别：Problem主要指客观存在的、难以解决或涉及到实际的复杂情景，需要深入思考的问题，常与solve连用；question侧重于由于对某事疑惑不解而提出的问题，通常是为了获取信息或寻求答案，常与answer连用。Eg: Aging of population is a serious problem. 人口老龄化是一个严重的问题。Do you have any other questions? 你还有什么其它问题吗？9.It is usually dry, because there is little rain. 沙漠通常很干，因为几乎没有雨。用法详解because为连词，译为“因为；由于”，常常用来引导原因状语从句，或回答why引导的特殊疑问句。注意because不可与so连用易混辨析because和because of的区别Because后面接句子；而because of后面接短语Eg: I was late for school because I got up late. 我上学迟到了因为我起来晚了。I was late for school because of the weather. 我上学迟到了以为天气原因。10.Not always. 不总下雨。11.In deserts, most houses have small windows to keep out the sun and wind. 在沙漠里，大多数房子有小的窗户用来阻挡阳光和风。常见搭配keep out 留在外面、远离、阻挡知识拓展：keep用法Keep (动词) “保持；保留；持续；使.保持某种状态；饲养”常见搭配keep + 形容词 “保持.”Keep sb./sth. + 形容词 “使某人/某物保持某种状态”Keep doing sth. “一直做某事”Eg: Please keep calm. 请保持冷静。Please keep promise. 请信守诺言。Please keep the dictionary well. 请好好保存这本词典。Please keep the room clean. 请保持房间干净。My grandmother keeps some chicken in her yard. 我奶奶在庭院里养了一些鸡。Mr. Wang keeps working day and night. 王先生没日没夜的工作。12.Trees are homes to some animals. 树是一些动物的家。常见搭配be home to . 是.的家Eg: Sea is home to many animals. 海洋是许多动物的家。13.Some animals live in a forest. 一些动物住在森林里。常见搭配live at + 门牌号Live on + 街道Live in + 地点Live together 住在一起Eg: She lives in this beautiful village. 她住在这个漂亮的村庄。She lives on Happy Street. 她住在幸福街。14.A plant needs three things to grow: water, sunlight and soil. 植物需要三样东西：水、阳光和土壤。用法详解Need (动词) 需要；有必要need可作情态动词，无人称和数的变化形式，后面需接动词原形常见结构need to do sth. “需要做某事（主动）”Need doing sth. “需要做某事（被动）”Eg: She need finish her homework in two hours. (need为情态动词) 她需要两个小时内完成作业。She needs to finish her homework in two hours. (need为实义动词) 她需要两小时内完成作业。The tree needs watering. 这颗树需要浇水。15.The lake is hard to find. 那个湖很难找到。用法详解Hard在作形容词时，译为“困难的；艰难的；硬的”，常常位于名词之前修饰名词，也可作表语。Hard在作副词时，译为“努力地；艰难地；猛烈地”Eg: This is a hard work. 这是一份艰难的工作。This stone is hard. 这块石头很硬。Mr. Wang works very hard. 王先生工作非常努力。The wind blows hard, I cant open my eyes. 风刮得很猛烈，我睁不开眼了。16.Bees can fly among flowers. 蜜蜂会在花丛中飞翔。易混辨析among和between区别among为介词，译为“在.之中”，常常用在三者或三者以上的人或物之间。“Between. and.”译为“在.和.之间”，用来连接两个并列的成分。注意between常常用在两者之间或两两之间。Eg: He is the tallest among his classma