【观察2】观察下列句子并译成汉语 ①I must be off now.The plane is taking off. ② The plane takes off at 7：30 tonight. ③—When are you going off for your holiday? —My plane takes off at 9:20,so I must be at the airport by 8:30.

Step 2

Learn the grammar point

现在我得走了。飞机就要起飞了。

飞机今晚七点半起飞。

你什么时候动身去度假?

我乘坐的飞机将于9:20起飞,所以我必须在8:30之前赶到机场。