期中（Unit1-3）专题复习·句型&语法 2025-2026学年外研版七年级英语下册

七年级英语（外研版）下册期中（Unit1-3）专题复习 句型&语法 一、句型专题 Unit1 The secrets of happiness 1. The secret of... is to do sth. 某物的秘诀是做某事 解析：The secret of + 名词（幸福、友谊等）+ is to do sth. The secret of happiness is to be kind to others and care about our friends. 幸福的秘诀是对他人友好，关心我们的朋友。 The secret of good friendship is to help each other when we are in trouble. 美好友谊的秘诀是在遇到困难时互相帮助。 2. It’s important for sb. to do sth. 对某人来说，做某事是重要的 解析：It为形式主语，真正的主语是后面的不定式to do sth.，sb.为人称代词宾格。 It’s important for friends to trust each other. 对朋友来说，互相信任是很重要的。 It’s important for us to finish our homework on time every day. 对我们来说，每天按时完成作业是很重要的。 3. Being + 形容词 + to others can bring us... 对他人……能给我们带来…… 解析：Being + 形容词（friendly/helpful等）作主语，can bring us + 名词（幸福、温暖等），表“某种行为带来的结果”。 Being friendly to others can bring us more happiness. 对他人友好能给我们带来更多幸福。 Being patient to our classmates can bring us closer together. 对同学有耐心能让我们走得更近。 4. We should be + 形容词. 我们应该……（建议类句型） 解析：should为情态动词，后接be动词原形，再跟形容词，用于提出合理建议，语气委婉。 We should be honest because honesty can help us make more friends. 我们应该诚实，因为诚实能帮助我们交到更多朋友。 We should be polite to our teachers and classmates at school. 在学校，我们应该对老师和同学有礼貌。 Unit2 Go for it 5. Let’s go for it! 让我们努力争取/加油！ 解析：口语化句型，用于鼓励他人或自己，在比赛、挑战、学习中常用，语气积极有力。 The match is difficult, but let’s go for it! 这场比赛很难，但让我们加油吧！ We are going to have a sports test; let’s go for it! 我们就要进行体育测试了，让我们努力争取好成绩！ 6. We should try our best to do sth. 我们应该尽最大努力做某事 解析：try one’s best to do sth. 为固定短语，one’s随主语变化（our/his/her等），to do sth. 为目的状语。 We should try our best to win the football match. 我们应该尽最大努力赢得这场足球比赛。 We should try our best to improve our English grades this term. 这学期，我们应该尽最大努力提高我们的英语成绩。 7. When we do sth., we should... 当我们做某事时，我们应该……（状语从句） 解析：when引导时间状语从句（用一般现在时），主句用should提出建议，贴合运动、学习等场景。 When we take part in a competition, we should never give up. 当我们参加比赛时，我们永远不应该放弃。 When we do sports at school, we should keep safe and follow the rules. 当我们在学校做运动时，我们应该注意安全，遵守规则。 8. Sb. has the courage to do sth. 某人有勇气做某事 解析：courage为不可数名词，has the courage to do sth. 表示“有勇气做某事”，可用于描述人物品质。 He has the courage to face the difficult match. 他有勇气面对这场艰难的比赛。 She has the courage to speak English in front of the whole class. 她有勇气在全班面前说英语。 Unit3 Food matters 9. Sth. is good/bad for our health. 某物对我们的健康有益/有害 解析：be good/bad for 为固定短语，后接名词（health/body等），用于描述饮食、习惯对健康的影响。 Eating fresh vegetables is good for our health. 吃新鲜蔬菜对我们的健康有益。 Drinking too much cola is bad for our teeth and health. 喝太多可乐对我们的牙齿和健康有害。 10. We should have a balanced diet. 我们应该有均衡的饮食 解析：balanced为形容词“均衡的”，a balanced diet为固定短语“均衡饮食”，常用于健康建议。 To keep healthy, we should have a balanced diet every day. 为了保持健康，我们每天都应该有均衡的饮食。 We should have a balanced diet, not just eat meat or snacks. 我们应该有均衡的饮食，不要只吃肉或零食。 11. There is too much + 不可数名词. / There are too many + 可数名词复数. 解析：too much 修饰不可数名词（water/sugar等），too many 修饰可数名词复数（snacks/apples等），均表示“太多……”。 There is too much sugar in the coffee. 咖啡里有太多糖。 There are too many snacks on the table. 桌子上有太多零食。 There is too much homework today, so we need to arrange our time well. 今天作业太多，所以我们需要合理安排时间。 12. We should keep healthy by doing sth. 我们应该通过做某事保持健康 解析：keep healthy为“保持健康”，by doing sth. 表示“通过做某事”，说明保持健康的方式。 We should keep healthy by doing sports every day. 我们应该通过每天做运动保持健康。 We should keep healthy by eating more fruit and drinking enough water. 我们应该通过多吃水果、喝足够的水保持健康。 二、语法专题 语法1：一般过去时 1. 定义：表示过去某个具体时间发生的动作或存在的状态，动作已结束，不再持续，常与明确的过去时间状语连用。 2. 常见时间状语：yesterday（昨天）、last week（上周）、last term（上学期）、the day before yesterday（前天）、just now（刚才）等。 3. 结构： ① 肯定句：主语 + 动词过去式 + 其他 ② 否定句：主语 + didn’t + 动词原形 + 其他 ③ 一般疑问句：Did + 主语 + 动词原形 + 其他？（肯定回答：Yes, 主语 + did；否定回答：No, 主语 + didn’t） 4. 动词过去式： win → won（赢）、lose → lost（输掉）、practise → practised（练习）、encourage → encouraged（鼓励）、join → joined（参加）、try → tried（努力）、play → played（玩、打）、guide → guided（指导） 5. 例句： Our team tried our best and finally won the match last week. 我们队尽了最大努力，上周终于赢得了比赛。 He lost the game yesterday because he was too nervous. 他昨天输掉了比赛，因为他太紧张了。 We joined in the school sports meeting last month and had a good time. 我们上个月参加了学校运动会，玩得很开心。 She practised playing the piano after school yesterday. 她昨天放学后练习了弹钢琴。 语法2：词性转换 1. 词缀规律： ① -ness（名词后缀）：将形容词转化为名词，表示“某种状态”，如 happy（形容词，开心的）→ happiness（名词，幸福）、kind（形容词，善良的）→ kindness（名词，善良） ② -ful（形容词后缀）：将名词转化为形容词，表示“充满……的”，如 help（名词/动词，帮助）→ helpful（形容词，有帮助的） ③ un-（否定前缀）：加在形容词前，表示“否定含义”，如 healthy（形容词，健康的）→ unhealthy（形容词，不健康的） 2. 词性转换： Unit1：happy（adj.）→ happiness（n.）、kind（adj.）→ kindness（n.）、help（v./n.）→ helpful（adj.） Unit2：confident（adj.）→ confidence（n.）、encourage（v.）→ encouragement（n.） Unit3：health（n.）→ healthy（adj.）→ unhealthy（adj.）、balance（n./v.）→ balanced（adj.） 3. 例句： True happiness comes from helping others. 真正的幸福来自帮助他人。 She is a helpful girl and always helps her classmates. 她是一个乐于助人的女孩，总是帮助同学。 His confidence helps him finish the difficult task easily. 他的自信帮助他轻松完成了这项困难的任务。 Eating unhealthy food is bad for our body. 吃不健康的食物对我们的身体有害。 语法3：too much vs too many 1. 区别： 短语 修饰对象 含义 例句 too much 不可数名词（水、糖等） 太多…… There is too much water in the cup. too many 可数名词复数（零食等） There are too many books on the desk. 2. 例句： There is too much fast food in the fridge. 冰箱里有太多快餐。 There are too many snacks on the table. 桌子上有太多零食。 We shouldn’t drink too much juice; it’s bad for our teeth. 我们不应该喝太多果汁，对牙齿不好。 There are too many students in the classroom; it’s a little crowded. 教室里有太多学生，有点拥挤。 语法4：be good for vs be good at 1. 区别： 短语 含义 后接内容 场景 be good for 对……有益 人或事物（名词/代词） 饮食健康 be good at 擅长…… 动名词（doing） 运动、学习等 2. 例句： Eating vegetables is good for our health. 吃蔬菜对我们的健康有益。 She is good at playing the piano. 她擅长弹钢琴。 Doing eye exercises every day is good for our eyes. 每天做眼保健操对我们的眼睛有益。 He is good at playing basketball and often joins in the school team. 他擅长打篮球，经常加入校队。 语法5：情态动词should的用法 1. 用法：表示“应该、应当”，语气委婉，用于提出合理建议、表达责任或义务。 2. 规则： ① should 后必须接动词原形（不能接动名词、不定式to do或动词三单）； ② 否定形式：shouldn’t（should not），表示“不应该”； ③ 疑问句形式：Should + 主语 + 动词原形 + 其他？（肯定回答：Yes, 主语 + should；否定回答：No, 主语 + shouldn’t）。 3. 例句： We should be kind to others. 我们应该对他人友好。 We should try our best to win the match. 我们应该尽最大努力赢得比赛。 We should eat more fresh fruit. 我们应该多吃新鲜水果。 We should listen to our teachers carefully in class. 我们应该在课堂上认真听老师讲课。 巩固练习 一、单项选择 1. My teacher often tells me that we ______ be honest to everyone around us. A. Should B. can C. will D. may 2. ______ is important for us to keep our friendship forever. A. That B. It C. This D. What 3. He ______ the English speech competition last term and became a winner. A. win B. won C. lose D. lost 4. There are ______ fresh apples on the table; let’s share them with classmates. A. too much B. much too C. too many D. many too 5. Doing morning exercises every day ______ good for our health. A. is B. are C. be D. am 6. Lucy is good ______ dancing and often performs in the school party. A. for B. at C. with D. to 7. The secret of happiness ______ to care about our family and friends. A. is B. are C. be D. am 8. We should try our best ______ English well this term. A. learn B. learning C. to learn D. learns 9. There is ______ milk in the glass; it’s not enough for us. A. too much B. too many C. little D. few 10. True ______ comes from helping those in need. A. happy B. happiness C. helpful D. help 二、翻译句子 1. 幸福的秘诀是对他人友好并关心他们。 The secret of happiness is ______ ______ others and care about them. 2. 对我们来说，互相信任是很重要的。 It’s important for us ______ ______ each other. 3. 我们应该尽最大努力赢得这场比赛。 We should ______ ______ ______ to win the match. 4. 多吃蔬菜对我们的健康有益。 Eating more vegetables ______ ______ for our health. 5. 我们应该通过做运动保持健康。 We should keep healthy ______ ______ sports. 6. 他有勇气在全班面前发言。 He has ______ ______ to speak in front of the whole class. 7. 让我们努力争取，永不放弃。 Let’s ______ ______ ______ and never ______ ______. 8. 我们应该有均衡的饮食来保持健康。 We should ______ ______ ______ ______ to keep healthy. 三、语法填空 阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式（每空一词）。 Everyone wants to be happy and healthy. There are some easy ways to achieve it. First, we should be 1______ (honest) to our friends and trust them. Honesty can help us keep our friendship forever. Second, doing sports every day is necessary. It can make us strong and full of 2______ (energy). When we 3______ (join) in a competition last term, we 4______ (try) our best and never gave up easily. We need to be confident and have the 5______ (courage) to try new things. Finally, we should keep a balanced diet. We should eat more fresh fruit and vegetables, and avoid eating too many 6______ (snack), because they are 7______ (healthy) and bad for our health. Eating a balanced diet 8______ (be) good for us. Besides, we should be good at 9______ (help) others, which can bring us happiness. Follow these ways, and you will live a happy and healthy life. 1______ 2______ 3______ 4______ 5______6______ 7______ 8______ 9______ 参考答案 一、单项选择 1.A 2.B 3.B 4.C 5.A 6.B 7.A 8.C 9.C 10.B 二、翻译句子 1.to be 2.to trust 3.try our best 4.is good 5.by doing 6.the courage 7.go for it; give up 8.have a balanced diet 三、语法填空 1.honest 2.energy 3.joined 4.tried 5.courage 6.snacks 7.unhealthy 8.is 9.helping 学科网（北京）股份有限公司 $