世界上60%以上的信件是用英语书写的，上两个世纪英国和美国在文化、经济、军事、政治和科学上的领先地位使得英语成为一种准国际语言。精品小编准备了高二必修3英语Unit5知识点，具体请看以下内容。
I. Words
1. trip: (通常指短途的)行走, 旅行 (尤指娱乐性的) 拓展：be/go on a trip to… make/take a trip to…
2. chat vi.&n. 聊天;闲聊
拓展：chat to/with sb (about sth) = have a chat with sb (about sth) 与某人聊天、闲谈……
1) What were you chatting to him about? 你和他聊了些什麽?
2) I had a long chat with her (about her job).(关於她的工作)我和她聊了很久。
3. eastward adv. 向东 adj. 向东的;朝东的 也作 eastwards,副词，意为“向东”。
1) They were traveling eastward(s) to the city which appeared in their dreams.
他们朝着东边向梦想中的城市进发。
2) The plane flied in an eastward direction. 飞机向东边飞去。
拓展：backward(s)向后 upward(s)向上 westward(s) adj./adv. 向西的，向西地
southward(s) adj./adv. 向南的，向南地 northward(s) adj./adv. 向北的，向北地
4. surround vt.&vi. 围绕; 包围
拓展：surrounding adj. 周围的 surroundings n. (常用复数) 周围的事物; 环境
be surrounded by / with 被……环绕着 surround ...with ... 使……包围
1) The house was surrounded by high walls.房子的四周有高墙。
2) We are living in pleasant surroundings. 我们生活在舒适的环境中。
3) As a child，I was surrounded by love and kindness.幼年时我备受关爱。
4) After being surrounded by the police for several days，the robber had to give in.
被警察包围几日后，抢匪不得不投降。
5) From the top of the hill you can see all the surrounding countryside.
从山顶上你可以看到周围的山村。
6) I came to realize that the key to success lay in trying to surround myself with creative
people.
我逐渐意识到成功的关键在于我应该尽量结交有创造性的人。
5. measure vt.& vi.测量;衡量;判定; n. 措施; 办法; 量度; 尺寸
拓展：be measured in 以……衡量 make…to one’s measure 按照…尺寸做
take one’s measure / take the measure of sb给某人量尺寸
take measures to do sth 采取措施做某事 measure A by B 用B衡量A
1) You can’t measure someone by the clothes they wear.
你不能以衣着衡量一个人。
2) You should take effective measures to improve your working conditions.
你们应采取有效措施来改善你们的工作条件。
3) In the old days，my mother always made new clothes to my own measure with Spring
Festival coming.
过去，妈妈在春节来临时总是为我量身做新衣服。
6. within: adv. 在里面, 内部, 入内
prep. 在……里面, 在……内部,在……范围以内, 不超过
拓展：within sight在视线之内 within one’s reach在某人够得着的范围 within one’s power在某人的能力范围之内
within与in表达时间的区别:
within指在时间或距离范围之内，表示“在这一范围内”，“不到”或“不超过”，常和一般将来时，一般现在时或一般过去时连用
in 是经过若干时间，指期限之外，表示“过多少时间”时，通常和一般将来时连用
I’ll be there within an hour. (一小时之内)
I’ll be there in an hour. (一小时之后)
7. border
n. 边界; 国界 She crossed the border in disguise.她伪装过了边境。
v. 与…接壤，接近 France borders Germany along parts of the Rhine.
法国沿莱茵河部分河段与德国接壤。
8. slightly adv. 轻微地;脆弱地;瘦小地
slight adj. 轻微的, 脆弱的, 瘦小的 slightness n轻微, 微小的事情
1) I just knew the man slightly. 我只是认识这个人, 但不熟。
2) There is just slightly too much salt in the soup. 汤里的盐稍微放多了点。
3) He had a slight fever. 他稍微有点发烧。
9. mix vt.&vi. 混合;调配
mixture n.[U,C] 混合(物);混合状态
拓展：mix A and/with B 把A与B混合起来
mix sth. up 把某物拌和;混淆某物 mix sth. in/into把某物掺进去
be/get mixed up with sth./sb. 与某事有关;与某人混在一起
1) The chemist mixed (up) some medicine for me. 药剂师给我配了些药。
2) 油和水不能混合。 Oil and water don’t mix. Oil won’t mix with water.
II. Phrases
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