球速体育

英语:我刚才看见他在打篮球 我刚才看见他在打篮 I saw him playing basketball just now. （用一般过去时就可以了。）他在成为老师之前是干什么的？What did he do before he had become a teacher？ 这个要用过去完成时，因为前面半句提示...