Unit 6 语法精讲（it作形式主语）-2023-2024学年八年级下册英语单元核心知识讲练（牛津译林版）

译林版八年级下册 Unit 6 语法精讲 it作形式主语 目 录 01. it’s adj to do 02. it’s adj for sb to do 03. it’s adj of sb to do 04. it adj that从句 05. 随堂练习 06. 课堂小结 it’s adj to do PART.01 it’s adj to do it’s adj to do 意为“做某事是……的” it是形式主语，不定式to do是真正主语 eg: a) It’s necessary to study hard. b) It was interesting to visit the Science Museum. it’s adj to do 该句型中的形容词是形容不定式表示的动作，例如：cheap、 convenient (方便的)、dangerous、difficult、easy、exciting、expensive、important、interesting、necessary、 normal (正常的)、 possible、useful、wonderful. eg: ① It’s dangerous to run on the road. 在马路上奔跑是危险的。 dangerous形容run on the road ② It was easy to finish my homework early.早完成家庭作业是很容易的。 easy形容finish my homework early it’s adj to do 转化： It’s important to learn physics well. →Learning physics well is important. Making a model car is not easy. → It’s not easy to make a model car. it’s adj for sb to do PART.02 it’s adj for sb to do it’s adj for sb to do 意为“对某人来说，做某事是……的” adj是形容词to do的，参见Part 01 eg： a) It’s useful for the students to learn some AI knowledge. b) It was difficult for him to pass the English exam. it’s adj for sb to do eg： It’s impossible for you to walk to the station. It is very convenient for us to use this APP to correct the mistakes. It’s exciting for Tom’s parents to receive his letter. It’s expensive for us to take a direct flight to the UK. it’s adj of sb to do PART.03 it’s adj of sb to do it’s adj of sb to do 意为“某人做某事真是/太……” of后的宾语与动词不定式to do之间是逻辑上的主谓关系 该句型中的形容词是形容人的特征、品质等。如: brave、careless、clever、foolish、 generous、honest、kind、nice、 polite、silly、stupid it’s adj of sb to do eg： It was so kind of you to help me a lot. 你帮助了我许多，真是太好了 you与help之间是主谓关系，kind形容you It’s clever of the little boy to ask the policeman for help. 那个小男孩向警察求助，太聪明了 the little boy与ask之间是主谓关系，clever形容词the little boy it’s adj of sb to do 此句型可以转化成以of后的宾语为主语的句子 eg：It’s rude of you to call Mr. King his name. → You are rude to call Mr. King his name. for sb的结构也可以转化成以sb为主语的句子 eg： It’s lucky for Tim to have these f