7A Unit 4 精编知识讲义 Part 1 词汇变形 + 短语背诵 一、词汇变形 原词（词性） 变形1（词性） 变形2（词性） 中文含义 activity (n.) activities (n. 复数) ——— 活动→（复数）活动 nature (n.) natural (adj.) ——— 自然→自然的 amaze (v.) amazing (adj.) amazed (adj.) 使惊讶→令人惊讶的（修饰事物）→感到惊讶的（修饰人） tire (v.) tiring (adj.) tired (adj.) 使疲劳→令人疲劳的（修饰事物）→感到疲劳的（修饰人） practice (n.) practise (v.) practises (v. 单三) 练习（名词）→练习（动词，英式）→（三单）练习 grow (v.) grows (v. 单三) grew (v. 过去式) 生长→（三单）生长→（过去式）生长 start (v.) starts (v. 单三) started (v. 过去式) 开始→（三单）开始→（过去式）开始 language (n.) languages (n. 复数) ——— 语言→（复数）语言 help (v./n.) helpful (adj.) helplessly (adv.) 帮助 / 帮助→有帮助的→无助地 interest (n./v.) interesting (adj.) interested (adj.) 兴趣 / 使感兴趣→令人感兴趣的→感兴趣的 二、短语背诵 1. take part in（参加，如 “All of us take part in the activity”） 2. take turns to do sth（轮流做某事，如 “My sister and I take turns to do different chores”） 3. go on a school trip（参加学校旅行，如 “We go on a school trip every year”） 4. hear from sb（收到某人来信，如 “I can hear from my friends every month”） 5. leave for + 地点（动身去某地，如 “The students will leave for that farm next Saturday”） 6. field trip（野外考察，如 “They are talking about the coming field trip”） 7. after-school activities（课外活动，，如 “They usually do after-school activities at 3:30 p.m.”） 8. be interested in (doing) sth（对…… 感兴趣，如 “I am interested in plants and animals”） 9. at weekends /on weekends（在周末，如 “My uncle usually goes fishing at the weekend”） 10. on weekdays（在工作日，如 “they are from 9 a.m. to 5 p.m. on weekdays”） 11. in the morning /afternoon（在上午 / 下午，如 “I read English in the morning”） 12. get close to nature（亲近大自然，如 “Climbing can help me get close to nature”） 13. take out the rubbish（倒垃圾，如 “then take out the rubbish”） 14. sweep the floor（扫地，如 “first I sweep the floor”） 15. would like to do sth（想要做某事，如 “I would like to go to Taipei with you”） Part 2 单元知识点考点汇总 1. 知识点：take turns to do sth 【用法】表示 “轮流做某事”，“take turns” 后接动词不定式（to do），不可接动词 - ing 形式；主语通常为复数（多人轮流），也可用于单数主语（一人轮流做不同事）。【搭配】take turns to do sth /take turns (in) doing sth（in 可省略）【例句】Our English teacher often asks us to take turns to answer her questions. My sister and I take turns to do different chores.（Integration 文档） 【即学即用】The students _____ (take) turns to clean the blackboard every day.（答案：take）We should _____ (take) turns to look after the little baby.（答案：take） 2. 知识点：hear from & hear of /about 【用法辨析】 短语 含义 搭配 例句 hear from 收到某人的来信 / 消息 hear from + sb（人） I can hear from my friends every month.（Reading1 文档） hear of / about 听说（某事 / 某人） hear of / about + sth/sb Hav ... ...
