be going to do和be to do的区别 be going to do和be to do的区别

\u8fa8\u6790be to do\uff0cbe going to do\uff0c\u548cbe about to do\u7684\u533a\u522b

be going to do
\u8868\u793a\u6700\u8fd1\u6253\u7b97\u8fdb\u884c\u7684\u4e8b,\u5177\u6709\u4e00\u5b9a\u7684\u76ee\u7684\u6027\u548c\u8ba1\u5212\u6027.(\u8fd9\u79cd\u5b89\u6392\u65e2\u6709\u53ef\u80fd\u662f\u4e3b\u8bed\u505a\u51fa\u7684,\u4e5f\u6709\u53ef\u80fd\u662f\u522b\u4eba\u5b89\u6392\u7684)
We are going to have a meeting tomorrow.
\u8868\u793a\u5373\u5c06\u8981\u53d1\u751f\u7684\u4e8b\u60c5\uff0c\u4e0d\u53ef\u907f\u514d\u8981\u53d1\u751f\u7684\u4e8b\u60c5.(\u591a\u7528\u4e8e\u8868\u5929\u6c14)
It's getting cloudy. It is going to rain.

be doing \u662f\u8fdb\u884c\u65f6\u6001\u7684\u8c13\u8bed\u7ed3\u6784,\u5728\u82f1\u8bed\u91cc,\u8fdb\u884c\u65f6\u6001\u90fd\u53ef\u4ee5\u8868\u5c06\u6765\u65f6\u6001.\u4f46\u662f\u8981\u7b26\u5408\u4e00\u5b9a\u7684\u6761\u4ef6.
\u4e00\u822c\u662f\u4ee5\u4e0b\u4e24\u6761:
01. \u7528\u73b0\u5728\u8fdb\u884c\u65f6\u8868\u4e00\u822c\u5c06\u6765\u65f6,\u9650\u4e8e\u52a8\u8bcd,come go arrive start die\u7b49\uff0c\u8868\u793a\u5373\u5c06\u53d1\u751f\u7684\u4e00\u4e2a\u52a8\u4f5c.
They are leaving tommorrow.
The foreign teacher is arriving on Monday.
02. \u7528\u6765\u8868\u793a\u5b89\u6392\u597d\u8981\u505a\u7684\u4e8b\u60c5(\u7528\u73b0\u5728\u8fdb\u884c\u662f\u7ed3\u6784\u8868\u4e00\u822c\u5c06\u6765\u65f6\u542b\u4e49)\u4ec5\u9650\u4e8e\u4e0b\u5217\u52a8\u8bcd,do;give;have;leave;leave for;move;play;return;ride;sail;see;set forth;set off;set out;start;start for;stay;travel;visit;wear
The president is starting his state visit to Mexico Friday.

1.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. It's going to cost 200 or as near as dammit.
这要花200英镑上下.

2.be to do

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。