Unit 6 Sunshine for all Grammar语法 It s adj. of for sb to do的用法及练习（含解析）

班级 姓名 学号 分数 Unit 6 Sunshine for all It’s +adj+of或for+sb+to do的用法 （时间：60分钟，满分：100分） 句型一：It is＋adj．＋to-infinitive（It is＋形容词十动词不定式） “It is＋形容词＋动词不定式”可以用来描述行为和情境。在该句型中，it是形式主语，真正的主语是后面的动词不定式。把真正的主语放在句末而用it作形式主语也是为了句子的协调，避免“头重脚轻”。该句型中的形容词是用来描述行为或情境的。 如： It is dangerous to play football in the street．在街上踢足球是危险的。 It is hard to understand what he said.要理解他的话是很难的。 句型二：It is＋adj.＋for…＋to-infinitive “It is＋形容词＋for…＋动词不定式”可以用来具体说明正在谈论的事情。在该句型中，it是形式主语，for后面所引导的人或物是动词不定式的逻辑主语，for sb./sth. to do sth.在英语中通常称为动词不定式的复合结构。其中的形容词用来说明不定式的特征，而不是说明人的特征或性格。用于该句型的常见形容词有：hard，difficult，easy，important, interesting, dangerous, possible, 'impossible, meaningful, comfortable, uncomfortable等。 如：It's difficult for you to pass the exam.对你来说通过这次考试是困难的。 句型三： It is＋adj．＋of…＋(not) to do sth．（It is＋形容词＋of…＋动词不定式） “It is＋形容词＋of…＋动词不定式”结构用来对某人的品质、性格等作出评价，其中的形容词必须是表示人的品质、性格等的形容词。it是形式主语，没有实际意义。 该结构中的sb.和(not) to do sth.有着逻辑上的主谓关系，所以该句型又可以转换成“sb.＋be＋adj.＋(not) to do sth.”。用于该句型的常见形容词有：careless，careful，clever, foolish, good, kind, nice, polite, impolite, rude, selfish, generous, wise, silly, modest, proud, thoughtful等。 如： It's very nice of you to give me a gift. =You are very nice to give me a gift. 你送给我礼物，你真好。 It is silly of you not to forgive others for their mistakes. =You are silly not to forgive others for their mistakes. 你不原谅别人的错误是愚蠢的。 一、单项选择(本大题共40小题，每小题2.5分，共100分) 1．—_____ is important for us to follow the traffic rules. —I agree with you. A．That B．It C．There D．This 2．—Look! Tom can play basketball now, but one hour ago, he couldn’t. —Well, it’s easy for boys _____ to play basketball. A．to learn B．learning C．learns 3．It’s kind _____ Mary to help the disabled. A．for B．of C．to 4．It is necessary _____ us to keep distance in public places during the pandemic. A．of B．in C．for D．with 5．It’s important for us _____ a good habit of learning English. A．to develop B．developing C．developed 6．It is clever _____ you _____ out this difficult Maths problem so quickly. A．for; to work B．for; work C．of; to work D．of; work 7．_____ is wonderful to have a picnic in the park at weekends. A．This B．That C．It D．One 8．It is kind _____ you _____ me find out the truth. A．for; to help B．of; helping C．of; to help D．for; helping 9．It’s time for you _____ the article. A．finish B．finishing C．to finish D．to be finished 10．I think _____ necessary _____ to take more exercise. A．it’s; for Jim and me B．it’s; to Jim and me C．that; for Jim and I D．th ... ...