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1.構成:

①.should / would do

　　　　 a. He said he would go to Shanghai for the holiday.

　　　　 b. He told me that I should succeed.

②.was / were going to do

　　　　 a. They were going to have a meeting.

　　　　 b. The students were going to plant some trees around the playground.

③.was / were (about) to do

　　　　 a. We were to finish the work in three days.

　　　　 b. I was about to go out when a friend dropped in.

2.用法: 表示在將來的某一時刻之前將要完成的動作, 這一動作也可能繼續進行

　　　　 a. By seven o’clock this afternoon we shall have arrived in Shanghai if the train keeps good line.

　　　　 b. Before noon we will have completed this work.

1.構成: shall / will have done

2.用法:

①.表示將來某時間點或時間段內將在進行的動作

　　　　 a. This time tomorrow we will be talking with the boss about this matter.

　　　　 b. I will be studying in this university for the next four years.

②.表示說話人感到某事即將發生或預計要發生某事

　　　　 a. I will be seeing him next month.

　　　　 b. We will be taking our holiday at the seaside in July.

　　　　 c. He will be arriving at six tomorrow morning.

1.構成: shall / will be doing

4.be about to do sth, 此結構表示“立刻, 馬上”要做某事或發生某情況

　 　　　　a. We are about to leave.

　　　　 b. Autumn harvest is about to start.

3.be +動詞不定式, 此結構表示職責, 義務, 意圖, 約定, 可能性等

　　　　 a. You are to be back by 10 o’clock.

　　　　 b. There is to be a sports meet next week.

　　　　 c. We are to meet at the school gate.

2.be going to do sth,　 此結構表示打算最近或將來要做某事, 或說話人根據己有跡象認為非常可能即將發生的事

　　　　 a. I am going to meet Tom at the station at six.

　　　　 b. He is going to stay here for a week.

c. Look at these black clouds --- it is going to rain.

　　　　 d. I am afraid I am going to have a bad cold.

1.shall / will do (shall用于第一人稱), 此結構表示單純的將來, 不涉及主語的主觀意愿

　　　　 a. I shall be twenty years old next year.

　　　　 b. You will meet him at the station this afternoon.

　　　 　c. The train will arrive soon.

2.用法: 表示一直持續進行到過去某一時刻的動作, 該動作可能剛剛結束, 也可能還在進行

　　　　 a. I had been waiting for two hours before the manager came down to see me.

　　　　 b. By the end of 1998 he had been learning English for five years.