河南省长垣县第十中学高中英语必修二《Unit 3 Computers Word3》课件
河南省长垣县第十中学高中英语必修二《Unit 3 Computers Word3》课件第5页

[练一练] ⑴ 红灯通常被看作一种危险信号。 Usually a red lamp is regarded as ________ _________ . ⑵ 他举手示意车停下。 She_______________ to stop by raising her hand.

signaled the car

a danger signal