My biology teacher, Mr. White, came to the classroom five minutes before the class began.

我的生物老师怀特先生在上课前五分钟来到了教室。

youdao

LL: I read the reading assignment just an hour before class began.

上课前一小时看看指定阅读些什么材料你就去上课啦！

youdao

I read the reading assignment just an hour before class began.

我在开课前一小时读过了要求阅读的那部分。

youdao

But Apple intervened before the class began and offered to let the students upgrade to iPad 2s, according to Eric Greenberg, who coordinates the course.

FORBES: Apple Lets Some Students Exchange iPads For iPad 2s

But Apple intervened just before the class began and offered to let the students upgrade to iPad 2s, according to Eric Greenberg, who coordinates the course.

FORBES: Apple Lets Some Students Exchange iPads For iPad 2s

But the Navy has many other options for generating savings in its budget, and the Ford class is a big improvement over carriers designed before the information revolution began.

FORBES: Despite Budget Woes, The Navy Is Unlikely To Cut Carriers