《七年级英语下册同步课堂帮帮帮》专题5.3 Grammar(人教版)

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一、why 引导的特殊疑问句
why 引导的特殊疑问句,意为"为什么……?",用来询问某事的原因。结构为
Why+助动词的适当形式+主语+动词原形+其他?/Why +be 动词+主语+其他?"。
1)一般用法:常用于询问原因。回答时常用 because
eg:—Why does he look worried? 他为什么看起来着急?
—Because he lost his key. 因为他把钥匙丢了。
【典例】Why don’t you like tigers?
— they’re really scary.
A. Because B. So C. But D. And
【答案】A[来源:Zxxk.Com]
2)特殊用法:Why don’t you+动词原形+其他?常用来提出建议或劝告,表示"为什
么不……?"相当于"Why not+动词原形+其他?"。
eg: —Why don’t you play basketball?=Why not play basketball? 为什么不打篮球呢?
—That sounds good. 那听起来不错。
【典例】I feel upset because I am too heavy.
— do more exercise to lose some weight?
A. Why don’t B. Why not C. Why not to
【答案】B
【解析】句意:——我感到难过,因为我太胖了。——为什么不多做锻炼来减肥呢?
由空格后的动词原形 do 可知用 why notwhy not+动词原形=why don’t you+动词原
形,意为"为什么不……?"。学科@
3why 还可作感叹词,表示吃惊、不耐烦、轻微的抗议、反对及犹豫等不同的语气。
egWhydon’t you know me? 啊,难道你不认得我吗?
二、形容词的用法
形容词修饰名词,用以说明事物或人的性质或特征,是英语中最常用的词性之一,
通常在句中作定语、表语等。
1)形容词作定语,用于修饰名词或代词 one, ones 等,位于名词或代词之前,但若修
饰不定代词要放在不定代词之后。
eg: These are interesting books. 这些是有趣的书。
I want some big ones. 我想要些大的。
There is something interesting in today’s newspaper. 今天的报纸上有有趣的内容。
【典例】Martha is a girl. She always smiles and says hello to others.
A. shy B. friendly C. craz y D. healthy
【答案】B
2)形容词作表语,放在连系动词(be/look/feel/sound )后,构成系表结构,即"连
系动词+表语",说明主语怎么样。
eg: You look great today. 你今天看起来很棒。[来源:学科网 ZXXK]
She is so friendly. 她是如此友善。
【典例】The flower smells and I like it very much.
A. well B. good C. bad D. badly
【答案】B
【解析】本题考查形容词作表语。smell 为感官动词,后接形容词作表语。根据句意可
知选 B
3)一些形容词和定冠词 the 连用,表示一类人或事物,相当于一个名词;另外,形
容词前可用 very, too, a little 等表示程度的词修饰。
eg: He often helps the old. 他经常帮助老人。
You are too lazy. 你太懒了。
一、根据句意,选择方框中适当的单词填空
cutelazy, why, beautiful, because
1.—Tom____ don't you like this dog?
—Because it's very scary.
2I like the giraffe ________it's very beautiful.
3My brother doesn't want to do homework.He is_____.
4The yellow skirt looks very_________.I want to buy one for my mother.
5Penguins(企鹅)are very_____.Kids like them.
二、根据汉语提示完成句子。
6.狗很聪明。它们通常不会迷路。
Dogs are very smart. They usually don't ________ ________.
7.当别人处于危险境地时,我们应该帮助他们。
We should help others when they are ________ ________.
8.我们一定不要买象牙制品。
We must not buy things ________ ________ ivory.
9.你们为什么砍倒这些树?
Why do you ________ ________ these trees?
10.不要整天待在家里看电视。
Don’t stay at home and watch TV ________ ________.
三、根据括号里的要求完成下列各题,空一词(含缩略形式)。
11Please be quiet.(定句)
Please ________ ________ quiet.
12I like elephants because they are friendly. (划线部分提问)
________ ________ you like elephants?
13Tom’s brother likes dogs.(划线部分提问)
________ ________Tom’s brother ________?
14Tina is from the UK. (划线部分提问)
________ ________ Tina from?
15My dog can dance. (划线部分提问)
________ can your dog ________?
用括号内所给单词的适当形式填空。
16The students want_________(save)the elephants
17There are many________(zoo)in the city
18The lion is_________(sleep)nowBe quiet
19Let him_______(take)a walk after dinnerIt’s good for his health
20There________(be)some meat on the table
21Elephants are always very_______(friend)to people
22My father often________(relax)on weekends
23He likes________(play)soccer very much
24Don’t_________(walk)on the grass
25A cat has four_______(leg)
、单选题
26.—What are your favorite animals?
《七年级英语下册同步课堂帮帮帮》专题5.3 Grammar(人教版).doc

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