1.構(gòu)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(lái)的某一時(shí)刻之前將要完成的動(dòng)作, 這一動(dòng)作也可能繼續(xù)進(jìn)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(gòu)成: shall / will have done

2.用法:

①.表示將來(lái)某時(shí)間點(diǎn)或時(shí)間段內(nèi)將在進(jìn)行的動(dòng)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(shuō)話人感到某事即將發(fā)生或預(yù)計(jì)要發(fā)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(gòu)成: shall / will be doing

4.be about to do sth, 此結(jié)構(gòu)表示“立刻, 馬上”要做某事或發(fā)生某情況

　 　　　　a. We are about to leave.

　　　　 b. Autumn harvest is about to start.

3.be +動(dòng)詞不定式, 此結(jié)構(gòu)表示職責(zé), 義務(wù), 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(jié)構(gòu)表示打算最近或?qū)��?lái)要做某事, 或說(shuō)話人根據(jù)己有跡象認(rèn)為非�？赡芗磳�發(fā)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(jié)構(gòu)表示單純的將來(lái), 不涉及主語(yǔ)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(xù)進(jìn)行到過(guò)去某一時(shí)刻的動(dòng)作, 該動(dòng)作可能剛剛結(jié)束, 也可能還在進(jìn)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.