一般將來時——將來做某事

A、構成形式：

(1)主語+be going to+動詞原形+其他。

(2)主語+will+動詞原形+其他。

B、判斷依據：

一個句子中既有be動詞，又有going、to和動詞，且動詞用的是原形，句中往往有tomorrow、soon、next week等詞。

C、句型變換：

She is going to have a picnic tomorrow.

She isn’t going to have a picnic tomorrow.

Is she going to have a picnic tomorrow?

Yes, she is. / No, she isn’t.

They are going to visit their grandparents next Sunday.

They aren’t going to visit their grandparents next Sunday.

Are they going to visit their grand parents next Sunday?

Yes, they are. / No, they aren’t.

三組將來時間表示法的用法比較

一、 “will / shall+動詞原形”與“be going to+動詞原形”

兩者均可表示將來時間和意圖，有時可以換用。如：I think it’ll rain this evening. / I think it’s going to rain this evening. 我想今晚會下雨。I won’t tell you about it. / I’m not going to tell you about it. 我不會把這事告訴你的。兩者的區別是：1. 若是強調某個意圖是經過事先考慮好的，則通常要用be going to;若是表示某個意圖沒有經過事先考慮，而是在說話的當時才臨時想到的，則通常用will。比較：—Ann is in hospital. 安住院了。—Oh, really? I didn’t know. I’ll go and visit her. 啊，真的嗎?我還不知道。我要去看看她。 (臨時想法，不能用be going to)—Ann is in hospital. 安住院了。—Yes, I know. I’m going to visit her tomorrow. 我知道，我打算明天去看看她。(事先考慮的意圖，不能用will)2. 若是有跡象表明要發生某事，通常只用be going to，不用will。如：Look at those black clouds. It’s going to rain. 看那些烏云，要下雨了。3. 帶有時間或條件狀語從句的主句通常不宜用be going to，而用will。如：When he comes back, I will tell him the news. 他回來時我就告訴他這個消息。If he comes back, I will tell him the news. 他若回來我就告訴他這個消息。

二、“be going to+動詞原形”與“現在進行時”

1. be going to主要表示主觀想法或意圖，而現在進行時表示將來則主要強調已經作出的安排。比較：I’m going to wash the car if I have time. 若有時間我想洗洗車。(主觀想法)I’m picking you up at 6; don’t forget. 我6點鐘來接你，不要忘了。6(已作出的安排)2. 但是當要表示主觀無法控制的預測時，通常要用be going to，不能用現在進行時態。如：It’s going to snow before long. 不久會下雪。Things are going to get better soon. 情況很快就會好起來。3. 當表示堅持要(不要)某人做某事時，兩者均可用。如：She’s taking [going to take] that medicine whether he likes it or not. 不管她喜歡不喜歡，她都得吃那藥。You’re not wearing [going to wear] that skirt to school. 你不可以穿那條裙子去上學。

三、“be going to+動詞原形”與“be to+動詞原形

be to+”兩者均可表示按計劃或安排要發生的動作，有時可互換(但be to比be going to正式)。如：Where are we going to stay tonight? 我們今晚住哪里?I’m (going) to play tennis this afternoon. 我打算今天下午打網球。另外，be going to 還可表示預測，即根據已有跡象預測將要發生的動作，此時不能用be to。如：Look, it’s going to rain. 看，要下雨了。

一般將來時——將來做某事

A、構成形式：

(1)主語+be going to+動詞原形+其他。

(2)主語+will+動詞原形+其他。

B、判斷依據：

一個句子中既有be動詞，又有going、to和動詞，且動詞用的是原形，句中往往有tomorrow、soon、next week等詞。

C、句型變換：

She is going to have a picnic tomorrow.

She isn’t going to have a picnic tomorrow.

Is she going to have a picnic tomorrow?

Yes, she is. / No, she isn’t.

They are going to visit their grandparents next Sunday.

They aren’t going to visit their grandparents next Sunday.

Are they going to visit their grand parents next Sunday?

Yes, they are. / No, they aren’t.

三組將來時間表示法的用法比較

一、 “will / shall+動詞原形”與“be going to+動詞原形”

兩者均可表示將來時間和意圖，有時可以換用。如：I think it’ll rain this evening. / I think it’s going to rain this evening. 我想今晚會下雨。I won’t tell you about it. / I’m not going to tell you about it. 我不會把這事告訴你的。兩者的區別是：1. 若是強調某個意圖是經過事先考慮好的，則通常要用be going to;若是表示某個意圖沒有經過事先考慮，而是在說話的當時才臨時想到的，則通常用will。比較：—Ann is in hospital. 安住院了。—Oh, really? I didn’t know. I’ll go and visit her. 啊，真的嗎?我還不知道。我要去看看她。 (臨時想法，不能用be going to)—Ann is in hospital. 安住院了。—Yes, I know. I’m going to visit her tomorrow. 我知道，我打算明天去看看她。(事先考慮的意圖，不能用will)2. 若是有跡象表明要發生某事，通常只用be going to，不用will。如：Look at those black clouds. It’s going to rain. 看那些烏云，要下雨了。3. 帶有時間或條件狀語從句的主句通常不宜用be going to，而用will。如：When he comes back, I will tell him the news. 他回來時我就告訴他這個消息。If he comes back, I will tell him the news. 他若回來我就告訴他這個消息。

二、“be going to+動詞原形”與“現在進行時”

1. be going to主要表示主觀想法或意圖，而現在進行時表示將來則主要強調已經作出的安排。比較：I’m going to wash the car if I have time. 若有時間我想洗洗車。(主觀想法)I’m picking you up at 6; don’t forget. 我6點鐘來接你，不要忘了。6(已作出的安排)2. 但是當要表示主觀無法控制的預測時，通常要用be going to，不能用現在進行時態。如：It’s going to snow before long. 不久會下雪。Things are going to get better soon. 情況很快就會好起來。3. 當表示堅持要(不要)某人做某事時，兩者均可用。如：She’s taking [going to take] that medicine whether he likes it or not. 不管她喜歡不喜歡，她都得吃那藥。You’re not wearing [going to wear] that skirt to school. 你不可以穿那條裙子去上學。

三、“be going to+動詞原形”與“be to+動詞原形

be to+”兩者均可表示按計劃或安排要發生的動作，有時可互換(但be to比be going to正式)。如：Where are we going to stay tonight? 我們今晚住哪里?I’m (going) to play tennis this afternoon. 我打算今天下午打網球。另外，be going to 還可表示預測，即根據已有跡象預測將要發生的動作，此時不能用be to。如：Look, it’s going to rain. 看，要下雨了。