Unit 6 Sunshine for all. It is +形容词+of...+动词不定式 (语法讲解+分层精练）--2025-2026学年译林版英语八年级下册

Unit 6 Sunshine for all. （It is +形容词+of...+动词不定式） (语法讲解+分层精练） 目 录 一、语法讲解 1 （一）基本结构 1 （二）核心用法 1 （三）常用形容词分类 1 （四）与“It is + 形容词 + for sb. + to do sth.”的区别 2 二、中考题型练习题（30道） 2 （一）单项选择（15题） 2 （二）用所给词的适当形式填空（10题） 5 （三）句型转换（5题） 6 一、语法讲解 （一）基本结构 · 构成：It is + 形容词 + of sb. + to do sth. · 例句：It is very kind of you to help me.（你能帮助我，真是太好了。） （二）核心用法 · it 作形式主语：句首的 it 没有实际意义，只是形式上的主语，真正的主语是后面的动词不定式短语 to do sth.。 · 真正主语是后面的动词不定式：句子想要表达的核心内容是“某人做了某事（to do sth.）是（形容词）的”。 · 功能：用于表达对某人做某事的看法或评价，强调人的品质或特征。 · 句型转换：此句型常可改写为 “Sb. + be + 形容词 + to do sth.”，意思不变。 · 例：It is clever of him to solve the problem. = He is clever to solve the problem. （三）常用形容词分类 用于这个句型的形容词通常用来描述人的性格、品质或行为特征，常见的有： 类别 常用形容词 正面品质 kind, nice, good, friendly, polite, honest, generous, brave, clever, wise, thoughtful, considerate, careful 负面品质 foolish, stupid, silly, careless, rude, impolite, selfish, lazy, wrong, cruel, crazy 其他描述 right, wrong, clever, crazy, mad, sweet, wonderful （四）与“It is + 形容词 + for sb. + to do sth.”的区别 这是中考的必考点，需要根据形容词的含义来判断： · of sb. 句型：形容词描述人的品质、特征（如 kind, clever, foolish）。可以改为“Sb. is + 形容词 + to do sth.”。 · for sb. 句型：形容词描述事情的性质（如 important, easy, necessary）。不可以改为“Sb. is + 形容词 + to do sth.”。 比较： · It is kind of you to say so. → You are kind to say so. · It is important for you to learn English. → ❌ You are important to learn English. (错误) 二、中考题型练习题（30道） （一）单项选择（15题） 1. It is very kind ______ you to help me with my homework. A. for B. of C. to D. with 【答案】B 【解析】 本题考查“It is + 形容词 + of sb. + to do sth.”句型。形容词 kind 描述人的品质，意为“善良的”，因此介词要用 of。本句可转换为 “You are kind to help me with my homework.”。若用 for，则形容词通常描述事情的性质（如 important, easy），不符合句意。 2. It was foolish ______ him to make such a mistake. A. for B. of C. to D. with 【答案】B 【解析】 foolish 意为“愚蠢的”，描述人的性格或行为特征，因此用 of。可转换为 “He was foolish to make such a mistake.” 3. It is clever ______ the little boy to work out the problem. A. for B. of C. to D. with 【答案】B 【解析】 clever 描述人的智力，用 of。可转换为 “The little boy is clever to work out the problem.” 4. It is generous ______ my aunt to donate so much money. A. for B. of C. to D. with 【答案】B 【解析】 generous 意为“慷慨的”，描述人的品质，用 of。可转换为 “My aunt is generous to donate so much money.” 5. It is careless ______ you to leave the door open. A. for B. of C. to D. with 【答案】B 【解析】 careless 意为“粗心的”，描述人的行为特点，用 of。可转换为 “You are careless to leave the door open.” 6. It is brave ______ the firefighter to save the child from the fire. A. for B. of C. to D. with 【答案】B 【解析】 brave 描述人的勇敢品质，用 of。可转换为 “The firefighter is brave to save the child from the fire.” 7. It is polite ______ the students to greet their teachers. A. for B. of C. to D. with 【答案】B 【解析】 polite 描述人的礼貌品质，用 of。可转换为 “The students are polite to greet their teachers.” 8. It is wrong ______ you to tell lies. A. for B. of C. to D. with 【答案】B 【解析】 wrong 在这里指“错误的”，描述人的行为不当，用 of。可转换为 “You are wrong to tell lies.” 注意：若 wrong 描述事情（如 It is wrong to tell lies.）则不用 of，但这里带有人称，强调人的行为，故用 of。 9. It was very nice ______ you to invite me to the party. A. for B. of C. to D. with 【答案】B 【解析】 nice 描述人的友好品质，用 of。可转换为 “You were very nice to invite me to the party.” 10. It is impolite ______ him to talk loudly in public. A. for B. of C. to D. with 【答案】B 【解析】 impolite 描述人的不礼貌行为，用 of。可转换为 “He is impolite to talk loudly in public.” 11. It is honest ______ the little girl to tell the truth. A. for B. of C. to D. with 【答案】B 【解析】 honest 描述人的诚实品质，用 of。可转换为 “The little girl is honest to tell the truth.” 12. It is wise ______ you to take your teacher's advice. A. for B. of C. to D. with 【答案】B 【解析】 wise 意为“明智的”，描述人的判断力，用 of。可转换为 “You are wise to take your teacher's advice.” 13. It is stupid ______ him to believe that story. A. for B. of C. to D. with 【答案】B 【解析】 stupid 意为“愚蠢的”，描述人的智力或行为，用 of。可转换为 “He is stupid to believe that story.” 14. It is considerate ______ you to bring me an umbrella. A. for B. of C. to D. with 【答案】B 【解析】 considerate 意为“体贴的”，描述人的品质，用 of。可转换为 “You are considerate to bring me an umbrella.” 15. It was crazy ______ her to drive so fast on the icy road. A. for B. of C. to D. with 【答案】B 【解析】 crazy 意为“疯狂的”，描述人的行为不当，用 of。可转换为 “She was crazy to drive so fast on the icy road.” （二）用所给词的适当形式填空（10题） 1. It is very kind of you _____________ (help) me with the housework. 【答案】to help 【解析】 句型 “It is + adj. + of sb. + to do sth.” 中，动词不定式符号 to 不能省略，故填 to help。 2. It was foolish of him _____________ (not follow) the doctor's advice. 【答案】not to follow 【解析】 否定形式在不定式符号 to 前加 not，构成 not to follow。 3. It is clever of the children _____________ (solve) the puzzle so quickly. 【答案】to solve 【解析】 不定式作真正主语，填 to solve。 4. It was careless of me _____________ (leave) my keys in the office. 【答案】to leave 【解析】 固定句型，填 to leave。 5. It is generous of my friend _____________ (share) her lunch with me. 【答案】to share 【解析】 不定式填 to share。 6. It is brave of the young man _____________ (jump) into the river to save the boy. 【答案】to jump 【解析】 填 to jump。 7. It was wrong of you _____________ (copy) others' homework. 【答案】to copy 【解析】 填 to copy。 8. It is polite of the students _____________ (say) “thank you” when they receive help. 【答案】to say 【解析】 填 to say。 9. It is silly of him _____________ (spend) all his money on video games. 【答案】to spend 【解析】 填 to spend。 10. It is honest of the boy _____________ (return) the wallet to the owner. 【答案】to return 【解析】 填 to return。 （三）句型转换（5题） 1. You are very kind to help me. (改为同义句) ______ very kind ______ you ______ help me. 【答案】It is; of; to 【解析】 原句 “You are kind to help me.” 可转换为 “It is kind of you to help me.”，即用 it 作形式主语，of 引出逻辑主语，后面接不定式。 2. He was foolish to believe that story. (改为同义句) ______ foolish ______ him ______ believe that story. 【答案】It was; of; to 【解析】 同理，改为 “It was foolish of him to believe that story.”。 3. It was careless of you to make such a mistake. (改为同义句) You ______ careless ______ ______ such a mistake. 【答案】were; to make 【解析】 将 it 句型转换为 “Sb. + be + adj. + to do sth.”，原句时态为一般过去时，故用 were，不定式保留 to make。 4. It is very generous of my aunt to buy me a gift. (改为同义句) My aunt ______ very generous ______ ______ me a gift. 【答案】is; to buy 【解析】 转换为 “My aunt is generous to buy me a gift.”，注意 be 动词用 is，不定式 to buy。 5. It is not polite of you to talk with your mouth full. (改为同义句) You ______ polite ______ ______ with your mouth full. 【答案】are not; to talk 【解析】 原句否定形式，转换为 “You are not polite to talk with your mouth full.”，be 动词用 are，否定加 not，不定式 to talk 不变。 1 学科网（北京）股份有限公司 $ Unit 6 Sunshine for all. （It is +形容词+of...+动词不定式） (语法讲解+分层精练） 目 录 一、语法讲解 1 （一）基本结构 1 （二）核心用法 1 （三）常用形容词分类 1 （四）与“It is + 形容词 + for sb. + to do sth.”的区别 2 二、中考题型练习题（30道） 2 （一）单项选择（15题） 2 （二）用所给词的适当形式填空（10题） 3 （三）句型转换（5题） 3 一、语法讲解 （一）基本结构 · 构成：It is + 形容词 + of sb. + to do sth. · 例句：It is very kind of you to help me.（你能帮助我，真是太好了。） （二）核心用法 · it 作形式主语：句首的 it 没有实际意义，只是形式上的主语，真正的主语是后面的动词不定式短语 to do sth.。 · 真正主语是后面的动词不定式：句子想要表达的核心内容是“某人做了某事（to do sth.）是（形容词）的”。 · 功能：用于表达对某人做某事的看法或评价，强调人的品质或特征。 · 句型转换：此句型常可改写为 “Sb. + be + 形容词 + to do sth.”，意思不变。 · 例：It is clever of him to solve the problem. = He is clever to solve the problem. （三）常用形容词分类 用于这个句型的形容词通常用来描述人的性格、品质或行为特征，常见的有： 类别 常用形容词 正面品质 kind, nice, good, friendly, polite, honest, generous, brave, clever, wise, thoughtful, considerate, careful 负面品质 foolish, stupid, silly, careless, rude, impolite, selfish, lazy, wrong, cruel, crazy 其他描述 right, wrong, clever, crazy, mad, sweet, wonderful （四）与“It is + 形容词 + for sb. + to do sth.”的区别 这是中考的必考点，需要根据形容词的含义来判断： · of sb. 句型：形容词描述人的品质、特征（如 kind, clever, foolish）。可以改为“Sb. is + 形容词 + to do sth.”。 · for sb. 句型：形容词描述事情的性质（如 important, easy, necessary）。不可以改为“Sb. is + 形容词 + to do sth.”。 比较： · It is kind of you to say so. → You are kind to say so. · It is important for you to learn English. → ❌ You are important to learn English. (错误) 二、中考题型练习题（30道） （一）单项选择（15题） 1. It is very kind ______ you to help me with my homework. A. for B. of C. to D. with 2. It was foolish ______ him to make such a mistake. A. for B. of C. to D. with 3. It is clever ______ the little boy to work out the problem. A. for B. of C. to D. with 4. It is generous ______ my aunt to donate so much money. A. for B. of C. to D. with 5. It is careless ______ you to leave the door open. A. for B. of C. to D. with 6. It is brave ______ the firefighter to save the child from the fire. A. for B. of C. to D. with 7. It is polite ______ the students to greet their teachers. A. for B. of C. to D. with 8. It is wrong ______ you to tell lies. A. for B. of C. to D. with 9. It was very nice ______ you to invite me to the party. A. for B. of C. to D. with 10. It is impolite ______ him to talk loudly in public. A. for B. of C. to D. with 11. It is honest ______ the little girl to tell the truth. A. for B. of C. to D. with 12. It is wise ______ you to take your teacher's advice. A. for B. of C. to D. with 13. It is stupid ______ him to believe that story. A. for B. of C. to D. with 14. It is considerate ______ you to bring me an umbrella. A. for B. of C. to D. with 15. It was crazy ______ her to drive so fast on the icy road. A. for B. of C. to D. with （二）用所给词的适当形式填空（10题） 1. It is very kind of you _____________ (help) me with the housework. 2. It was foolish of him _____________ (not follow) the doctor's advice. 3. It is clever of the children _____________ (solve) the puzzle so quickly. 4. It was careless of me _____________ (leave) my keys in the office. 5. It is generous of my friend _____________ (share) her lunch with me. 6. It is brave of the young man _____________ (jump) into the river to save the boy. 7. It was wrong of you _____________ (copy) others' homework. 8. It is polite of the students _____________ (say) “thank you” when they receive help. 9. It is silly of him _____________ (spend) all his money on video games. 10. It is honest of the boy _____________ (return) the wallet to the owner. （三）句型转换（5题） 1. You are very kind to help me. (改为同义句) ______ very kind ______ you ______ help me. 2. He was foolish to believe that story. (改为同义句) ______ foolish ______ him ______ believe that story. 3. It was careless of you to make such a mistake. (改为同义句) You ______ careless ______ ______ such a mistake. 4. It is very generous of my aunt to buy me a gift. (改为同义句) My aunt ______ very generous ______ ______ me a gift. 5. It is not polite of you to talk with your mouth full. (改为同义句) You ______ polite ______ ______ with your mouth full. 1 学科网（北京）股份有限公司 $