Unit 5 语法笔记 2024-2025学年沪教牛津版（广州深圳沈阳通用）八年级英语下册

Unit5 语法笔记 1.It is+adj. +for sb. to do...句型 (1)“ It is+adj. +for sb. to do .… ”意思是“做……对某人(forsb.)来说怎么样(adj.)”。常用于表示事物的特征特点,表示客观形式的形容词。形容词是描述做的事情(即形容词描述的是后半句的todo结构)。这类形容词有: important(重要的)，necessary(必要的)， difficult(困难的)，easy(容易的),hard(艰难的),dangerous(危险的),safe(安全的),useful(有益的)，pleasant(舒适的),interesting(有趣的)，impossible(不可能的),right(正确的)， likely(可能的)等。如: It's very dangerous for children to cross the busy street.对孩子们来说,穿过繁忙的街道很危险。 It's difficult for us to finish the work.对我们来说,完成这项工作很困难。 (2)在这个句型中,It为形式主语,真正的主语是动词不定式,所以可以直接转换为不定式做主语句型。如: It's very hard for him to study two languages.(=To study two languages is very hard for him).对他来说学两门外语是很难的。 2.运用adj.+enough+to do...句型 (1)“ ... adj. + enough + to do .…. ”表示足够……去做某事。如: He is rich enough to buy a new car.他足够富有去买一辆新车。 (2)通常情况下,“... adj. +enough +to do ..”常和 too ... to ... 和 so ... that ...句型进行句式转换。如: He is not old enough to go to school.=He is too young to go to school.=He is so young that he can't go to school.他还太小了不能去上学。 3.It is+adj. +of sb. to do...句型 (1)“It's +adj.+of+sb.+ to do... ”,表示“某人(做某事)怎么样”一般用表示人物的性格、品德,表示主观感情或态度的形容词。这个形容词是用来形容人的,of后的宾语能与前面的形容词构成主表关系,这类形容词有: good(好的),kind(友善的),nice(友好的)， polite(有礼貌的),clever(聪明的),foolish(愚蠢的),lazy(懒惰的),right(正直的),careful(细心的),careless(粗心的)，wrong(错误的)，wise(明智的),silly(愚蠢的),rude(粗鲁的),wrong(错误的),natural(自然的),stupid(笨的),bad(坏的),brave(勇敢的),cruel(残忍的),honest(诚实的),naughty(淘气的)等。如: It's very nice of you to help me.你来帮助我,你真是太好了。 It's clever of you to work out the math problem.你真聪明,解出了这道数学题。 It's wrong of the other children to make fun of you.其他的孩子嘲笑你是错误的。 (2)通常情况下,我们也可以把这种句式转换为直接把动作的行为者做句子的主语的句子。如: It's very kind of you to help me.(= You are very kind to help me.)你能帮助我真是太好了。 It's very rude of her to say such words.(= She is very rude to say such words.)她说这样的话,真粗鲁。 学科网（北京）股份有限公司 $$