begoingtodo一般指已经计划好的事情

1、be going to do 一般指已经计划好的事情，而且是主语本身主动要做的事情will do 指主语本身愿意做的事情be going to与will的区别be going to与will两者都可表示将要发生的事、将要去做某事，但它们有如下几点区别：1. be going to 表示近期、眼下就要发生的事情，will 表示的将来时间则较远一些，如：He is going to write a letter tonight.He will write a book one day.2. be going to 表示根据主观判断将来肯定发生的事情，will表示客观上将来势必发生的事情。He is

2、 seriously ill. He is going to die.He will be twenty years old.3. be going to 含有“计划，准备”的意思，而 will 则没有这个意思，如：She is going to lend us her book.He will be here in half an hour.4.在有条件从句的主句中，一般不用 be going to, 而多用will, 如：If any beasts comes at you, Ill stay with you and help youwill 和be going to的区别在下列情况下用

3、will:1.根据说话者的见解和观点对未来作出预言时I think Smiley will make a good footballer.Smith will beat Patterson with a knock-out in the second round.2.在说话时突然作出的决定时，一般用will的缩约式llIm tired. I think Ill go to bed. Come to supper. OK, thanks. Ill bring a bottle.3.表示意图、提议、许诺、自愿做某事或坚持做某事时Theres the door-bell. Ill go.I will

4、 stop smoking I really will!4.表示请求和邀请时Will you give me a hand?Will you come in and have a drink?5.表示命令或威胁时You will start work at six oclock.Ill bit you if you do that again.6.表示习惯和规律时She will greet me when she meets me.Man will die.在下列情况下用be going to1.根据现在所见，预计不久肯定会发生的事情时Look!its going to rain!The c

5、ar is going to turn over.2.谈及打算或事先决定了的事情时What are you going to be when you grow up?Why have you torn the paper into pieces?I am going to rewrite it.附加内容：将来时的六种表示方法be going to do将会.一般用于将来时态例句与用法:1. I am assuming that the present situation is going to continue.我认为目前的情况将会继续下去.2. Its going to cost 200 o

6、r as near as dammit.这要花200英镑上下.3. How did you find out that Burns was going to be promoted?你是怎么知道伯恩斯将会得到提升的？4. You must be out of your mind if you think Im going to lend you 50!你以为我会借给你50英镑, 你准是疯了!5. Im just going to check in these books at the library.我要去图书馆还这些书。6. They are going to move to a new h

7、ouse next week.下星期他们将迁入新居。7. It looks as if it is going to rain.看来要下雨了。8. Are you going to America by boat or by plane?你到美国是坐船还是坐飞机？be doing主要用于现在进行时态，有时可以用来表达将来时例句与用法:How are you doing with your new boss?你跟你的新上司处得如何？We are doing a pilot study to see if the new product will sell well.我们正在为这种新产品做试销调查

8、，看它的销路好不好。According to these figures, our company is doing well.从这些数字来看，我们的公司经营得不错。哦，那我补充一下：be to do sth. 表示安排、计划、决定、命令或注定要发生的事.一般用于被动语态，to be done也可以用于主动语态。都是表示将来时态比如：Greater efforts to increase agricultural production must be made if food shortage is to be avoided.为避免食物短缺，我们需要更加努力来提高农业生产。The bridge is to be built next year.大桥将在明年修建。以下是主动语态的例句：He is to die.他就要死了。To live is to work.活着就要工作