1. in a row 连续几次地 eg: This is her third win in a row. 排成一排 eg：They were standing neatly in a row.
1.play a part in 参与 +n./pron./ving eg：I want to play a part in saving the earth.
1.by the time 到……时为止，在……以前 引导时间状语从句 从句为一般过去时，主句用过去完成时 eg: By the time I got home，my mother had cooked dinner. 主句为一般将来时，从句中用一般现在时表将来 eg: He will be a teacher by the time he is twenty.
1.would rather 后+v.原 没有人称和数的变化 肯定形式： would rather do sth. = prefer to do sth. eg:I would rather stay at home because its'cold outside. 否定形式 would rather not do sth.宁愿不做某事 eg:He would rather not listen to rock music. 一般疑问句 将would 提到句首 eg:Would
1.be supposed to do... 词意 应该做…… =should / ought to 表示劝告、建议、义务、责任 后+V.原 否定形式：be not supposed to eg: You're not supposed to be here. Do you realize I'm supposed to kill you?
1.prefer 过去式/过去分词 preferred 后+doing/to do prefer A to B 与B相比，更喜欢A
1.whose 谁的 eg: Whose is that computer? =Whose computer is that ？
1.allow 允许；准许 句型 allow sb. (not) to do sth. 允许某人（不）做某事 be (not) allowed to do sth. (不)被允许做某事 allow doing sth. 允许做某事
1.pleasure 可数 乐事；高兴的事 不可数 高兴；愉快 常用表达 With pleasure 乐意效劳 My pleasure 不用谢
1、glass 不可数 玻璃 eg: I cut my hand on some broken glass. a piece of glass 可数 玻璃杯，眼镜(glasses)
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