初中英语有关形容词的句型(共14张PPT)

(共14张PPT)
Unit5 Save the endangered animals
语法精讲
形容词的有关句型
1.句型：It is+adj.+for sb. to do sth.
表示做某事对某人来说很adj.
如果形容词仅仅是描述事物的，如difficult，easy，hard，important，necessary，possible,impossible 等，则用for sb.。
It is important for students to learn English well.
学生学好英语是很重要的。
It is possible for you to make your dream come true.
实现你的梦想对你来说是可能的。
It is difficult for me to answer to work out this problem.
2.句型：It is+adj.+of sb. to do sth.
（1）it为形式主语，to do sth.为真正主语。
（2）如果句中的形容词是描述不定式行为者的性格，品 质的， 如kind，good，nice，right，wrong，clever，careless粗心的，polite，foolish愚蠢的等， 则用of sb。
It is kind of you to help me find the lost bike.
It was wrong of him to tell lies. 他说谎话是错的。
It is polite of you to keep quiet when you are eating.
3.句型： 主语+ be + adj.+enough to do sth.
表示“足够……做某事”。
The boy is old enough to go to school.
这个男孩年龄够大，可以上学了。
John is strong enough to carry the box.
约翰足够强壮去搬这个盒子
enough有形容词和副词两种词性
作副词使用时可修饰形容词或副词，位于被修饰词的后面，如：strong enough；
作形容词使用时可修饰名词，位于名词前面，如：enough money。
enough的位置
4.句型：主语+ be + not+adj.+enough to do sth.
表示“不够……做某事”
=too+adj.+to do sth. 表示“太……而不能做某事”
=so+adj.+that 从句表示“如此……以至于...”
The girl is not old enough to learn swimming.
=The girl is too young to learn swimming.
=The girl is so young that she can not learn swimming.
这个女孩太小（不够大）不能学习游泳。
The boy is too young to go to school.
=The boy is so young that he can't go to school.
=The boy is not old enough to go to school.
同义句转换
The bag is too heavy for the girl to carry.
=The bag is so heavy that the girl can't carry it.
=The bag is not light enough for the girl to carry
能力测试
（一）用介词for, of填空
1．It’s bad ____ you to smoke.
2．It is nice______ you to give me such advice.
3．It is important ______ me to protect wildlife.
4．It’s polite_______ you to keep quiet when you’re eating.
5．It was generous______ her to lend me so much money.
6．It is easy______ me to answer this question.
7．It is difficult______ me to work out this problem.
8．It’s clever______ her not to take the gift.
9．It is unnecessary _______ me to sweep the floor.
10．It is happy______ me to help others.
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（二）单项选择
1.It's nice of you ____me with my English.
____with pleasure.
A help B helping C to help
2.It is kind____this girl to help the old woman do lots of things.
A at B for C of
3.Jim is old enough____himself.
A to wear B to put on C to dress
4.It is very dangerous ___children to cross the busy street.
A of B for C with
5.Is that box __ for you to carry
_No ,I don't think so.It's heavy.
A enough light B light enough C too light
6.It's impossible__the work in three days.
A for me to finish B for me finishing C of me to finish
Thank you