词汇是英语学习的基础，因此下面的高二英语Unit5重点词汇的大家一定要认真掌握，希望大家可以学好本课的知识点。
1. chat vi.&n. 聊天；闲聊
[典例]
1). What were you chatting to him about? 2). I had a long chat with her (about her job).
[重点用法]
chat to/with sb (about sth) = have a chat with sb (about sth) 与某人聊天、闲谈……
2. eastward adv. 向东 adj. 向东的；朝东的
[典例]
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. [词语归纳]
eastward(s) adj./adv. 向东的，向东地 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
southeastward(s) adj./adv. 向东南的，向东南地
northeastward(s) adj./adv. 向东北的，向东北地
southwestward(s) adj./adv. 向西南的，向西南地
northwestward(s) adj./adv. 向东北的，向东北地
3. surround vt.&vi. 包围；围绕 surrounding adj. 周围的 surroundings (常用pl.)环境
[典例]
1). Trees surround the pond.
2). The house was surrounded by high walls.
[重点用法]
surround...with... 用……包围……
be surrounded by/with... 周围都是……
4. measure vi.&vt. 测量；衡量；判定 n.[c,u] 尺寸；量具；计量单位；措施
[典例]
1). Can you measure accurately with this ruler? 用这把尺子能量得准吗?
2). It’ s hard to measure his ability when we haven’ t seen his work. 没有见过他的作品, 很难估计他的能力。
[重点用法]
measure A by B 用B衡量A sth. measures 2 metres by 4 metres 某物长4米宽2米
measure sb. for a suit = make a suit to sb’ s measure 给某人量身做一套衣服
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