I should tell you first of all that in this class, the taping is not going to affect you because the camera is going to be behind your head.

我想跟你们强调的是,录像将不会影响你们,因为摄像机在你身后

耶鲁公开课 - 基础物理课程节选

For example, if you are running behind schedule and you really must be moving to your next appointment,

例如，如果你已经比计划的时间晚了，不得不马上赶赴下一场约会的时候，

have to 课堂 - SpeakingMax英语口语达人

Get right behind that guy; you got to be--boy you got to be lined up.

到那个伙计后面去,现在排好队,同学,排好了

耶鲁公开课 - 古希腊历史简介课程节选

If you walk into a class with 5th graders, who on day one are years behind where they should be and hate school and are kind of like to hate you because of it.

如果你走进一个五年级教室，学生们从第一天开始就落后很多,恨学校，因此也恨你。

哈佛公开课 - 幸福课课程节选

You're sitting there behind your glass window and someone comes in and wants to chat, you should be available; that's what banking is.

你坐在你敞亮的办公室里,有人想进来跟你聊聊,那你就得抽空奉陪,做银行的就是这样

耶鲁公开课 - 金融市场课程节选

So "I was" will be used to talk about anything that you're referring to that's behind you.

所以，“I was” 会被用来谈论那些你曾经做过的事情。

I was 课堂 - SpeakingMax英语口语达人