精选优质文档-倾情为你奉上1 in pairs:成双的,成对的 a pair of. 一双/副/把 做主语时,句子的谓语动词一般用单数形式英式美式动词“连”词practisepractice名词”练习“practicepractice2 practise doing sth练习做某事 practise后面不能加动词不定式to do sth3 look up (1) 查找,查阅 Look up the time of the next train in the timetable. (2) 向上看 The girl was so short that she had to look up at the mother.look at看look for寻找look after照顾,照料look around向四周看,环顾四周look out小心,当心look down向下看look up查阅;向上看look like