内容正文:
高中必修第一册重大版
【核心句型专版】
A版句型全解
核心句型
【A版句型全解】It is essential for us to do
sth
高中·重大版·必修第一册
基本结构
句型结构:It is essential for us to do sth
It为形式主语,真正主语是后置的不定式短语to do sth:'for us'”表示动作的逻辑主语,us为
宾格形式;essential意为“必不可少的,极其重要的”,用于强调某事物对某人的必要性。
例句展示:
It is essential for us to master basic grammar rules in English learning.
(在英语学习中,掌握基本语法规则对我们来说是必不可少的)
It is essential for us to develop good study habits during high school.
(高中阶段培养良好的学习习惯对我们来说极其重要)
句型精讲(核心考法)
考法1:区分or与of的用法(高中核心考点)
判断规则+例句对比
规则l:形容词描述to do sth.这件事的性质或特点(如crucial,significant,.challenging,bene
ficial,essential等)→用for
例句:It is essential for citizens to abide by the law.
验证:Citizens are essential逻辑不通
规则2:形容词描述sb.的品质或性格(如considerate,thoughtful,,brave,wise,irresponsible
等)→用of
例句:It is considerate of her to prepare gifts for everyone.
验证:She is considerate逻辑通顺
真题再现(2024重大版必修第一册同步测试)
高中必修第一册重大版
【核心句型专版】A版句型全解
It is crucial
scientists to develop new energy technologies.
A.of
B.for
C.with
D.on
答案:B
解析:crucial描述“研发新能源技术”这件事的重要性,不修饰人,用for
真题再现(2023重庆一中高一月考)
It's really brave
him to rescue the child from the burning building.
A.of
B.for
C.to
D.about
答案:A
解析:brave描述人的品质,he is brave''逻辑通顺,用of
考法2:句型的同义句转换(高中常见考点)
转换规则+例句转换
规则:去掉形式主语It,保留形容词,将for/of sb.中的sb.作为句子主语,结构变形为To
do sth.is+adj.+for/ofsb.(不定式短语作主语时,谓语动词用单数):或用动名词短语作主语,结
构为Doing sth.is+adj.+for/ofsb.
例句l1:原句It is essential for us to master English grammar.
To master English grammar is essential for us./Mastering English grammar is essential for us.
例句2:原句It is wise of the manager to adopt the new policy.
To adopt the new policy is wise of the manager./Adopting the new policy is wise of the manager.
真题再现(2024重大版必修第一册单元检测)
It is beneficial for students to read classic literature.(改为同义句)
classic literature is beneficial for students.
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高中必修第一册重大版
【核心句型专版】A版句型全解
答案:Reading
真题再现(2023四川绵阳高一期末改编)
It is responsible of us to take care of our parents.(改为同义句)
care of our parents is responsible of us.
答案:To take
考法3:对句型中不同成分提问(高中语法难点)
提问规则+例句提问
规则1:对形容词提问→用How+be+it+for/ofsb.+to do sth.?
例句:原句It is extremely difficult for them to complete the project in a month.
间句:How is it for them to complete the project in a month?
规则2:对sb.提问→用Who+be+it+adj.+for/of+to do sth.?
例句:原句It is thoughtful of Mary to remember everyone's birthday.
间句:Who is it thoughtful of to remember everyone's birthday?
规则3:对不定式短语提问→用What+be+it+adj.+for/ofsb.+todo?
例句:原句It is meaningful for volunteers to help people in need.
间句:What is it meaningful for volunteers to do?
真题再现(2023重大版必修第一册期中测试)
It is quite challenging for us to learn advanced mathematics.(对划线部分提问)
it for you to learn advanced mathematics?
答案:How is
真题再现(2024重庆八中高一月考)
It is careless of Tom to leave his wallet in the classroom.(对划线部分提间)
is it careless of
leave his wallet in the classroom?
答案:Who;to
考法4:不定式的复合结构在从句中的应用(高中拔高考点)
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高中必修第一册重大版
【核心句型专版】A版句型全解
应用规侧+例句解析
规则:当It is essential for sb.to do sth.句型作为宾语从句、主语从句或表语从句时,需保持
原有结构,或在特定语境下将for sb.to do sth.作为真正主语/宾语
例句I:宾语从句:We all agree that it is essential for us to respect cultural differences..
(that引导宾语从句,从句中保持原句型结构)
例句2:主语从句:It is obvious that it is essential for teenagers to develop independent think-
ing.
(it作形式主语,that从句中嵌套原句型)
真题再现(2024重大版必修第一册期末真题)
The teacher emphasized that
is essential for us
(improve)our logical thinking abil-
ity.
答案:it;to improve
解析:that引导宾语从句,从句中需用It is essential for sb.to do sth.结构,it作形式主语,
不定式短语作真正主语
真题再现(2023湖北武汉高一联考)
is necessary for us
(take)immediate action to protect endangered species.
答案:It;to take
解析:此处为主语从句的变体,It作形式主语,真正主语为to take immediate action.,符合
It is essential/necessary for sb.to do sth.拓展用法
句型综合训练
训练1:单项选择(考察for/of辨析)
1.It is smart
my sister to solve the puzzle in five minutes
A.of
B.for
C.with
D.about
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高中必修第一册重大版
【核心句型专版】A版句型全解
2.It is important
children to learn basic life skills.
A.of
B.for
C.from
D.at
3.It's polite
you to hold the door for others.
A.of
B.for
C.to
D.in
4.It is difficult
us to finish the project before Friday.
A.of
B.for
C.on
D.with
5.It is honest
the boy to return the lost wallet.
A.of
B.for
C.by
D.to
训练2:同义句转换(考察句型变形)
1.It is helpful for students to ask questions in class.
→
questions in class is helpful for students.
2.It is careless of Tom to forget his homework again.
→
his homework again is careless of Tom.
3.It is necessary for us to protect the environment.
the environment is necessary for us.
4.It is kind of Mary to share her toys with friends.
→
her toys with friends is kind of Mary.
5.It is easy for me to learn English words by heart.
English words by heart is easy for me
训练3:完成句子(考察语境运用)
高中必修第一册重大版
【核心句型专版】A版句型全解
1.对我们来说,每天锻炼很有益。
→It is beneficial
exercise every day.
2.他真善良,帮助了那位迷路的老人。
→It is kind
help the lost old man.
3.对学生来说,按时完成作业很必要。
→It is necessary
finish homework on time.
4.她真聪明,想出了这么好的主意。
→It is clever
come up with such a good idea.
5.对我们来说,保持健康的饮食习惯很重要。
→It is important
keep healthy eating habits.
训练4:写作高级句式(考察句型翻译与挖空)
1.帮助有需要的人是很有意义的。
→It is meaningful
help people in need.
2.我们每天读英语报纸是很有必要的。
→
Is necessary
read English newspapers every day.
3.她放弃这次机会真是太傻了。
→It is silly
give up this opportunity.
4.对孩子们来说,学会独立很重要。
→It is important
learn to be independent
参考答案
I.训练1:单项选择
1.A2.B3.A4.B5.A
Ⅱ.训练2:同义句转换
1.To ask 2.To forget 3.To protect 4.To share 5.To learn
L训练3:完成句子
1.for us to 2.ofhim to 3.for students to 4.of her to 5.for us to
V.训练4:写作高级句式
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高中必修第一册重大版
【核心句型专版】A版句型全解
1.for us to 2.It;for us to 3.of her to 4.for children to
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