课前，他从来没有不预习功课的。
那个懒惰的男孩去课前他准备了他的功课。
That lazy boy went to class before he had prepared his lesson.
苏珊忘了做功课，所以得赶紧在上课前写完。
Susan forgot to do her homework and had to scramble to finish it before class.
苏珊忘了做功课，所以得赶紧在上课前写完。
Susan forgot to do her homework and had to scramble to finish it before class.
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