她上课时眯眼看黑板。

She squints at the board during class.

小明盯着看黑板上的字。

Xiao Ming peers at the words on the blackboard.

请看黑板 / 屏幕。

Look at the blackboard / screen, please.

请看黑板（幻灯片）。

Look at the blackboard(show slides), please.

不要看黑板-,看这个点。

Now, don't look at the board-- now, look at this spot now.

你们有看黑板上的布告吗？

Have you read the notice on the board?

他看黑板但什么也没看到。

He looked at the blackboard but saw nothing.

注意看黑板才能获取更多的知识。

Look at the blackboard carefully so as to acquire more knowledge.

请看黑板！但我什么都看不到呀！

Look ? Please look at the blackboard! But I can't see anything.

现在我正在看黑板。

I'm looking at the blackboard now.