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英语句子开头用to do和doing和do的区别是什么?
to
do
是不定式,doing是分词。前者要用动词原形,后者根据句子主语的主动被动关系可以选择现在分词和过去分词。
to do 和doing放在句首的区别
你好!
do和todo放在句首的区别
do是动词或助动词,to
do是不定式。
1.
do放在句首,或者是祈使句,如
Do
me
a
favour!
或者是一般疑问句,Do
you
understand?
2.
To
do
放在句首可以做主语,如
To
do
it
well
is
not
easy。
英语中to do的用法
1)be to do:
(1)表示事先商定、安排或准备要做的事情。如:
The students are to meet at the school gate tomorrow. 明天学生们将在学校大门口集会。
2)表示可能性,必要、责任、义务、禁止等。如:
Her necklace was not to(couldn't)be found. 她的项链找不到了。
2) be going to do:
1) 表示将要发生的事情或打算最近要进行的动作。如:
It is going to rain soon. 快要下雨了。
2) 在含有条件状语从句的主从复合句中,主句一般不用be going to,而常用will(第一人称用shall)。如:
The football match will be put off if it rains tomorrow. 如果明天下雨,足球赛将被推迟举行。
3) be about to do:
1) 表示即将发生的动作,在时间上指最近的将来。如:
We are about to start. 我们就要出发了。
The new school year is about to begin. 新学年开学在即。
2) 在含有be about to do的句子中,不能再加时间状语。如:
Wrong: The medical team is about to start immediately.
Right: The medical team is about to start. 医疗队就要出发了。
附:be to do 用法的详细讲解:
be to +动词不定式中的be to用作情态习语, 这时的be to do表示: “计划”、“安排”、“义务”、“应该”、“可能”、“命运”等。(have to, ought to)。如:
He is to have a holiday. (表示将来)
The committee is to meet today. (表示计划、安排)
You are to go to the hotel where rooms have already been booked for you.
1. 表示 “将”、“计划”、“安排”。(意思接近于be going to) 如:
Their daughter is to get married soon.
It was the last film at the cinema,which was to close next day.
was/ were to do 表示过去曾经计划要做的事,或者过去应当做的事,而且从现在的角度来看已经实现了。如:
I felt nervous because I was soon to leave home for the first time.
The expedition was to start in a week’s time.
was/ were to have done, 表示 “本打算”、“本计划”或“本应当” 做的事而没有做成或没有发生。
do 和to do和doing 和done的区别
要看它们在句子中充当什么成分呢?还要看它接的词
to
do
是强调动作
而doing
强调状态
to
do、doing开头的句子中,to
do、doing都被称为非谓语成分
其中,to
do和doing可能做主语,也可能做状语
还有如一些特殊的动词还可以接动名词:
forget
doing/to
do
forget
to
do
忘记要去做某事。
(未做)
forget
doing
忘记做过某事。
(已做)
stop
to
do
停止,中断做某事后去做另一件事。
stop
doing
停止做某事。
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