Unit 4 主要知识点梳理 2024-2025学年沪教版（2024）七年级英语上册

U4主要知识点梳理 1． 单词词性转换 1. amazing adj.令人大为惊奇的—amaze v. 使惊奇 2. north n.北方—northern adj.北方的 3. wide adj.宽的— widely adv.范围广地；广泛地 4. disappear v. 消失—appear v. 出现;显得 5. pollution n. 污染—pollute v污染 6. protect v.保护—protection n.保护 7. harmful adj.有害的—harm n. 伤害;损害 8. hunt v. 打猎—hunter n.猎人 9.freeze v. 冷冻; 结冰 froze - frozen(过去式/过去分词) 10.explore v探索 explorer n. 探险者 exploration n. 探索 explored v.-ed式 exploring v.-ing形式 二．重点短语 freezing cold严寒 in many different ways在许多不同方面 in height在高度上 the North and South Poles 南北极 a grain of rice　一粒米 pay attention to 注意 more than 超过 turn... into ..(=change... into ...)把...变成... die out灭绝 global warming 全球变暖 plastic pollution塑料污染 a huge amount of 大量的 end up in the sea最终落入海中 face to face 面对面 ask sb. to do sth.叫某人做某事 in the north of ..在……的北部 as small as ...和……一样小 come up with想岀 find out发现;弄清楚（情况） air pollution 空气污染 water pollution 水污染 reduce pollution 减少污染 pollution problems 污染问题 any other things任何其他的东西 in the 1800s 在19世纪 a group of.一队；一群... in the middle of...( in the centre of ...)在...中间 plant trees植树 man-made forest.人造森林 each year(=every year)每年 farm chemical 农用化学品 harmful gas 有害气体 三．重点语法 1.be home to ..是...的家园 2.be covered by 被...覆盖 3.provide sb with sth provide sth for sb给某人提供某物 4. as+adj/adv原形+as 和....一样 not as/so+adj/adv原形+as 不如 5. hundred, thousand, million, billion前有数字，后面不加s不加of hundreds of数以百计, thousands of成千上万, millions of数百万；大量；无数, billions of 数十亿 6. make sb/sth+形容词/动词原形 7. Let’s+动词原形 让我们做某事 8. try one’s best to do sth 尽某人最大的努力做某事 9. fewer and fewer+可数名词复数 越来越少 less and less+不可数名词 越来越少 more and more 越来越多 10. reach +地点 v.到达(某地) = get to +地点 = arrive in +大地点/ at+小地点 11.protect...from doing sth...保护...以免遭受伤害 12.be harmful to = be bad for 对..有害 13.on one’s own= by oneself 独自 14.-ing修饰事物 -ed修饰人 15. 有a有 无a无 修饰可数名词 a few few 修饰不可数名词 a little little 16. some用于肯定句，any用于否定句和疑问句 17. one 一个 the other（两者中的）另一个 another （除了已有的）再来一个 some一些 others 其他的 18. help sb do sth 帮助某人做某事 19. 四．核心句式 1. There are fields and mountains, rivers and seas, forests and deserts.地球上有田野和山脉，河流和海洋，森林和沙漠。 2.The plants on Earth are wonderful in many different ways.地球上的植物在很多不同的方面都很奇妙。 3.The Earth provides us with all the things we need, such as food, water, air and energy.地球为我们提供了所有我们需要的—切，比如食物，水，空气和能源。 4. The Earth is home to all living things.地球是所有生物的家园。 5. What can we do to protect the Earth?我们能做些什么来保护 6. There are many things we can do.我们可以做很多事情。 五．作文 The Earth is a beautiful planet.There are many places on Earth,such as fields and mountains,rivers and seas, forests and deserts. This beautiful planet is our only home. However, we are harming the Earth in many different ways. For example,every year,people catch a lot of fish so there are fewer and fewer fish in the sea.People use a lot of dangerous farm chemicals so there is less and less clean groundwater. We only have one Earth, so we have to protect it.Planting trees is a good way to reduce global warming.We have less and less clean water to drink, so it is time for us to save water.We can reduce air pollution by riding bicycles. Let's do something to make our home a better world from now on! 学科网（北京）股份有限公司 $$