单词巩固1 what [hwɔt] pron 什么2 is [iz] v 是3 what's [hwɔts] what is 的缩写形式4 your [juə] pron 你的,你们的5 name [neim] n 名字6 my [mai] pron 我的7 I
a number of, the number of。cause 指造成某一事实或现象的直接原因,后接of sth./doing sth,reason用来解释某种现象或结果的理由,后接for sth./doing sth. the reason for being late。