Unit 5重点单词、短语、句型梳理
重点单词
within
【课文原句】At school, they had learned that most Canadians live within a few hundred kilometres of the USA border, ... (Page 34)
【点拨】within在句中作介词,意为"在……以内",用来描述空间上的距离。如:
You should keep the tools you use the most within arm’s reach.
【拓展】
within也可以指时间和范围上的"在……以内"。如:
You must give me an answer within 3 days. "There’s a beauty within us, just like a rose."
【辨析】in和within in和within都有"在……以内"的含义。in后常接表示时间长度的名词,意为"多长时间之后",有"不少于"之意；within后可接表示时间长度或距离的名词,表示在"这一范围内",有"不到"或"不超过"之意。如：
He will be back in a week.他一星期后回来。
He needs the report within one hour.他不出一个小时就需要这篇报道。
【小试牛刀】用介词in或within填空。
1. The students will have final exams________ a few weeks’ time.
2. My uncle lives _________ 1 kilometre of my place.
3. Please keep the dictionary _________ reach.
4. His response to the matter was ______ my expectations.
