期末语法复习：Unit 5-6学案 2025-2026学年沪教版英语八年级下册

2024级英语备组 班级：____________姓名：____________学号____________ Unit 5语法复习（It作形式主语 & 形容词+enough+to do） 㐱 语法精讲一： It 作形式主语 当句子的真正主语是动词不定式（to do）时，常用 It 放在句首作形式主语，而把真正的主语放在句末，以避免头重脚轻。 基本结构： It is + adj. + (for/of sb.) + to do sth. 类别 用法说明 示例 for sb. to do 形容词修饰事情的性质，如：important, necessary, difficult, easy, possible, impossible, convenient It is important for us to protect wildlife. of sb. to do 形容词修饰人的品质特征，如： kind, cruel, brave, clever, stupid, wise, foolish, nice, generous It is cruel of hunters to kill endangered animals. ⚠ 高频易错词：cruel（残忍的）、foolish（愚蠢的）、wise（明智的）、generous（慷慨 的）均修饰人的品质，必须搭配 of，而不是 for。很多学生误将cruel 等词当作“事情的性质”而错用 for。 语法精讲二：形容词 + enough + to do 句式 结构及注意事项 示例 肯定句 主语 + be + adj. + enough + to do sth. The panda is strong enough to survive. 否定句 主语 + be + not + adj. + enough + to do sth. The baby animal is not old enough to walk. 同义转换 not + adj. + enough = too + 反义词 + to do He isn't tall enough =He is too short. enough 的位置规则： 修饰形容词/副词：形容词/副词 + enough（old enough, fast enough） 修饰名词：enough + 名词（enough food, enough water） 与 so...that... 的转换： He is strong enough to carry the box. = He is so strong that he can carry the box. It is... + enough 结构： It is warm enough to go out without a coat.（天气够暖和，可以不穿外套出去。） 一、用所给动词适当形式填空 1.It is important ________ (protect) animals in danger. 2.It takes people years ________ (help) endangered animals return to nature. 3.It’s necessary for us ________ (stop) buying wild animal products. 4.It is cruel ________ (kill) rare animals for their fur. 5.It is a great task ________ (build) more natural reserves. 6.The monkey is strong enough ________ (climb) tall trees easily. 7.The young tiger isn’t big enough ________ (hunt) food by itself. 8.We are old enough ________ (know) how to protect endangered animals. 9.The panda is healthy enough ________ (return) to the wild forest. 10.The river isn’t clean enough ________ (provide) safe water for wild animals. 二、单项选择 1.It ______ necessary for us ______ save tigers and pandas. A. is; to B. are; to C. is; / D. are; / 2.It takes the keepers three hours ______ food for wild animals every day. A. prepare B. to prepare C. preparing D. prepared 3.______ is dangerous ______ people to get close to hungry wild beasts. A. That; for B. It; for C. This; of D. It; of 4.It ______ a big problem ______ many animals lose their homes. A. is; that B. are; to C. is; to D. are; that 5.It’s kind ______ the workers ______ look after hurt small animals. A. for; to B. of; to C. for; / D. of; / 6.—How long ______ it take you ______ about endangered animals? A. does; to learn B. is; to learn C. do; learn D. are; learning 7.______ hard work to protect all the animals in danger. A. That’s B. This is C. It’s D. Its 8.It’s useless ______ only talking about protection without doing anything. A. to B. do C. to do D. doing 9.It is bad ______ hunters ______ catch wild animals illegally. A. of; to B. for; to C. of; / D. for; / 10.It will take us a long time ______ these animals out of danger. A. help B. helping C. to help D. helped 11.The deer is fast enough ______ away from dangerous hunters. A. run B. to run C. running D. ran 12.The little fox isn’t old enough ______ food alone. A. find B. finding C. to find D. found 13.He is kind enough ______ money for homeless wild animals. A. raise B. to raise C. raising D. raises 14.The cage isn’t big enough ______ the tiger to live in. A. for B. to C. of D. with 15.The water is dirty enough ______ lots of small animals sick. A. make B. making C. to make D. made Unit6 语法(情态动词should/had better) 1. should 的用法 句式 结构 例句 肯定句 主语 + should + 动词原形 You should pick something related to Chinese culture. 否定句 主语 + shouldn't + 动词原形 You shouldn't put too much information on your poster. 疑问句 Should + 主语 + 动词原形？ Should I make a poster about the Silk Road? 2.had better 的用法 句式 结构 例句 肯定句 主语 + had better + 动词原形 You 'd better start early. 否定句 主语 + had better not + 动词原形 You 'd better not pick such a broad topic. 💡 had better 常缩写为 'd better。 ⚠️ 注意：had 是固定形式，不表示过去，也没有时态变化。不能说 have better 或 will better。 一、用括号内动词正确形式填空 1.You should ________ (review) lessons every day after school. 2.We’d better ________ (not waste) time playing games when studying. 3.She shouldn’t ________ (give) up practicing spoken English. 4.You had better ________ (take) notes while doing experiments. 5.Students should ________ (learn) knowledge by doing real activities. 二、单项选择 1.You ______ read more to improve your learning skills. A. should to B. should C. had better to D. shouldn’t to 2.We’d better ______ learning from mistakes. A. keep B. to keep C. keeping D. kept 3.You ______ put off your homework till the last minute. A. should B. had better C. shouldn’t D. better not to 4.—I don’t know how to learn by doing.—You ______ try small experiments first. A. had better to B. should C. better D. should to 5.Had we better ______ our study plan right now? A. make B. to make C. making D. made 1 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $