高中知识搜索小程序1、about/around/some/or soabout,around,some,or so均可来表示“大约”。前三个词通常放在被修饰成分之前，而or so多置于其后。如：about one hundred students大约100名学生；at around eight o’cloch在大约八点钟；some twenty years ago 大约二十年前；[应用]一句多用：这件设备重10吨左右。Key:This piece of equipment weighs some 10 tons.This piece of equipment weighs 10 tons or so.This piece of equipment weighs about (around)10 tons.2、表示“决心、决定做”的几个用法1)decide to do 决定做We decided to put off the trip to the U.S.我们决定推迟美国之行。2)make a decision to do ：He has made a decision to buy a new computer.他已决定买一台新电脑。3)make up one’s mind to doThe doctor made up his mind to go abroad for further education. 那位医生决定出国深
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