内容正文:
Unit 5 Save the endangered animals
教材重点语法知识链接及典型例题
含有形容词的句型
原文呈现:
1. It is important for us to protect giant animals.
2. It is good for people to save endangered animals.
3. They are strong enough to protect themselves..
4. It is cruel of them to kill the animals.
5. It is kind of you to try to save the dog.
总结:
It is + adj. + for + n./pron. + to + v.
请仔细观察以下例句中的黑体部分,并掌握结论部分的内容。
【观察】
1. It is important for us to protect them.
2. It is good for people to save endangered animals.
【结论】
(1)在句型“Itis+adj.+for+n./pron.+to+v.”中,it是形式主语,动词不定式是真正的主语。
(2)此句型中的形容词表示句中动作的特征,如可能性、必要性、重要性、紧迫性、频繁程度以及价值判断等。常用于这一句型的形容词有:common, easy, right, good, (un)important, (un)necessary,(im)possible,(un)usual等。
adj. +enough+to+v.
请仔细观察以下例句中的黑体部分,并掌握结论部分的内容。
【观察】
1. They are strong enough to protect themselves.
2. The baby panda is not old enough to eat bamboo.
= The baby panda is too young to eat bamboo.
【结论】
(1)在“adj.+enough+to+v.”结构中,enough为副词,修饰形容词时放在其后,表示主语所指的对象有足够的能力去做某件事,该句型意为“足够······来······;太······以至于 . .