内容正文:
Unit 8 Section A
语句+语法精讲
人教版九年级上册
1
语句总览
2
It’s not easy to do what she does.
She is always amazed by their strength and technique.
Don’t forget to watch the opening ceremony with your classmates.
其中 It 是形式主语,用来平衡句子结构,避免头重脚轻;真正的主语是后面的动词不定式 to do what she does。
注:what she does 是一个宾语从句,作 to do 的宾语,意为“她所做的事”。
不定式作主语时,to 后必须接动词原形,不能接名词、形容词或句子。
【解析】
【知识点】It作形式主语
句 1
It’s not easy to do what she does.
做她做的事情可不容易。
3
【例句】
It is difficult to learn a new language well.
学好一门新语言是很困难的。
It is important to protect our environment.
保护我们的环境是很重要的。
It is interesting to visit different places.
游览不同的地方是很有趣的。
4
该句型还可以替换为 It is + adj. + for sb. to do sth.,用来补充说明动作的执行者,意为“对某人来说做某事是……的”。
当形容词描述的是人的品质时,也可以用 It is + adj. + of sb. to do sth.。
【拓展】
【例句】
It is necessary for us to exercise every day.
对我们来说,每天锻炼是很有必要的。
It is kind of you to help me with my homework.
你帮我做作业,真是太好了。
5
句中 amazed 是形容词,由动词 amaze(使惊讶)变化而来,主语是人时,用 amazed 表示“感到惊讶的”,区别于修饰事物的 amazing(令人惊讶的)。
by 在这里引出让主语感到惊叹的对象,后面可接名词,代词或名词性短语。
【解析】
【知识点】be amazed by 对……感到惊讶
She is always amazed by their strength and technique. 她总是对他们的力量和技术感到惊讶。
句 2
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【例句】
I am amazed by his courage in the game.
我惊叹于他在比赛中的勇气。
She is amazed by the beauty of the sunset.
她惊叹于日落的美丽。
They are amazed by the player’s skills.
他们惊叹于这位选手的技巧。
7
forget to do sth. 表示忘记去做某事,强调事情没有做,忘了去做。
forget doing sth. 表示忘记做过某事,强调事情做过了,但忘记做过了。
【解析】
【知识点】 forget to do sth. 忘记去做某事
Don’t forget to watch the opening ceremony with your classmates. 别忘了和你的同学一起看开幕式。
句 3
8
【例句】
Don’t forget to bring your notebook to class tomorrow.
别忘了明天带笔记本去上课。
Don’t forget to call your parents after school.
别忘了放学后给你父母打电话。
Don’t forget to turn off the light when you leave.
你离开的时候不要忘记关灯。
I will never forget seeing her for the first time.
我永远不会忘记第一次见到她的情景。
9
_______ important to protect our environment.
A. That’s
B. It’s
C. This is
D. There’s
模拟考场
10
My brother often _______ his homework and feels worried.
A. forgets doing
B. forgets to do
C. forgot to do
D. forget doing
模拟考场
11
The little boy was amazed _______ the magic show and clapped his hands happily.
A. on
B. for
C. with
D. by
模拟考场
12
用所给单词的适当形式填空。
模拟考场
1. It is not easy ________ (learn) a foreign language well in a short time.
2. When we visited the science museum, we were _______ (amaze) by the huge robot.
3. He was late for school because he forgot ________ (set) to set the alarm clock last night.
to learn
to set
amazed
又
改错(找出错误并改正)。
模拟考场
1. It is easily to solve this math problem if you think carefully.
错误:______ → 改正:________
2. My sister forgot locking the door this morning, so she ran back home to lock it.
错误:________ → 改正:________
easily
locking
easy
to lock
14
主谓一致
三大核心重点
定义
定义
主谓一致(Subject-verb agreement)表示:句子里的主语和谓语动词,要在“人称”和“单复数”上保持一致。
简单来说:单数主语配单数谓语,复数主语配复数谓语。
例:She likes music. ✅
She like music. ❌
They like music. ✅
主谓一致
1
三大核心重点
2
(1)基础语法一致
当主语是单数名词、不可数名词、单数代词时,谓语动词
要用单数形式。
当主语是复数名词、复数代词时,谓语动词要用复数形式。
The young runner trains hard every day for the race.
这位年轻的赛跑选手每天为比赛刻苦训练。
The students practice their relay handoffs on
the playground. 学生们在操场上练习接力棒交接。
(2)就近一致
有些连词连接两个主语时,谓语动词的单复数,要和离它
最近的那个主语保持一致,这就是“就近原则”。
常见的连词有:there be、either…or…、neither…nor…、
not only…but also…。
Either my brother or I am going to join the boxing club.
要么我哥哥,要么我要加入拳击俱乐部。
Neither the coach nor the players want to give
up the game. 教练和队员们都不想放弃这场比赛。
There is a baton and three medals on the table.
桌子上有一根接力棒和三枚奖牌。
(3)特殊主语的意义一致
有些主语形式上是单数,但表示复数概念;或者形式上是复数,
但表示单数概念,这时候要看实际意义来定谓语。
情况1:集合名词(family, class, team, group)
表示“整体”时,谓语用单数。
The team is the strongest one in our school.
这支队伍是我们学校最强的一支。
表示“成员/个体”时,谓语用复数。
The team are all preparing for the competition now.
队员们现在都在为比赛做准备。
(3)特殊主语的意义一致
情况2:不定代词(everyone, someone, nobody, each)
这类代词作主语时,谓语动词一律用单数。
Everyone hopes to win a medal in the school sports
meeting.
每个人都希望在学校运动会上赢得一枚奖牌。
Each of the runners has his own training plan.
每位赛跑选手都有自己的训练计划。
(3)特殊主语的意义一致
情况3:时间、金钱、距离等复数名词
表示一个整体概念时,谓语用单数。
Ten kilometers is a long way for a beginner runner.
十公里对一名新手跑者来说是一段很长的路。
Fifty yuan is enough to buy a new sports water bottle.
五十元足够买一个新的运动水壶。
(3)特殊主语的意义一致
情况4:both…and…连接的主语
表示“两者都”,谓语动词必须用复数。
Both table tennis and basketball are popular in China.
乒乓球和篮球在中国都很受欢迎。
Both swimming and running help build your strength.
游泳和跑步都能增强你的力量。
模拟考场
There ___ a book and two pens on the desk.
is
am
are
be
模拟考场
Either you or he ___ wrong.
am
is
are
be
模拟考场
— What ___ the population of China?
— It ___ over 1.4 billion.
are; is
are; are
is; are
is; is
用所给单词的适当形式填空。
模拟考场
1. Either you or she ______ (have) to clean the blackboard.
2. The news on TV ____ (be) very boring tonight.
3. A pair of new shoes ______ (be) under the bed.
4. The old ______ (be) taken good care of in our country.
has
is
is
are
又
改错题(找出并改正错误)。
模拟考场
1. Each of the boys have a new schoolbag.
________ → _______
2. There are a table and four chairs in the room.
________ → _______
3. The old man and his dog is walking along the river.
________ → _______
have
is
are
has
is
are
又
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