C.has taken off

D.took off

2.-Are you still busy?

-Yes,I　　　 my work,and it won't take long.

A.just finish

B.am just finishing

C.have just finished

D.am just going to finish

3.-Will you tell us something about the weather in Canada?

-I 　　　 to that.

C.am going D.came

4.The mid-term exam 　　　,and everyone is trying hard to study.

A.was coming B.came

C.has come D.is coming

拓展

　　Ⅰ.More structures refer to an action to happen in the future.

　　1.I will/shall write you a letter.

　　2.We're going to have many classes next week.

　　3.I was about to lock the door when the telephone rang.

　　4.If you are late,you are to stand outside the door.

　　5.The plane to Beijing takes off at 7:35 tomorrow.

　　Conclusion:

　　1)Sentence 1,2:common forms of future tense.

　　2)be going to do 可表有迹象要发生的事

　　3)Sentence 3:be about to do...when 意思是　　　。

　　4)Sentence 4:be to 表示　　　,也可表"命令""义务"等。

　　5)Sentence 5:一般现在时表将来表示　　　。

　　Ⅱ.Consolidation

　　1.Fill in the blanks.

　　1)The sky is so dark.It 　　　(rain).

　　2)Since you've done something wrong,you 　　　(stand)here.

　　3)He 　　　 (start)when it rained.

　　4)You 　　　 (fail)the test if you don't work hard.

　　5)The plane from Beijing　　　 (arrive)at 6:30 pm.

　　2.Multiple choice.

　　1)"The moment 　　　 soon," he thought to himself,waiting nervously.

　　A.came

　　B.has come

　　C.was coming

　　D.is coming

　　2)I've won a 7-day holiday to Thailand and I 　　　 my mum with me.

A.have taken