是watch sb do sth还是watch sb to do sth

应是watch sb do sth；而在被动语态中，要还原to，即：sb be watched to do sth。

例句：

1、We can't just sit by and watch you throw your life away.  

我们不能眼睁睁地看着你毁掉自己的生活。

2、I wound up the watch and listened to it tick.  

我给表上紧发条，听着它嘀嗒作响。

3、We stood on the dark headlands to watch them pass.  

我们屹立于黑暗的海角，监视其通过。

4、What used to be a must-see for the country is watched by a shrinking audience. 

曾经必须观看的国情咨文电视讲话的观众人数正在收缩。

5、So I eagerly watched to see what they would do. 

因此我热切地观察他们的作为。

扩展资料

相关短语：

watch for v. 等待；当心；守候

watch television 看电视

watch out for 注意寻找；戒备；小心提防

watch over 看守；监视；照管

watch movies 看电影

keep watch 看守；值班；放哨；提防

close watch 紧盯

gold watch 金表

human rights watch 人权监察站

on the watch 提防着；守候着

wrist watch n. 手表

watch carefully 仔细看；当心

quartz watch n. 石英表；石英钟

pocket watch 怀表；表袋

watch a film 看电影

on watch 值班；监视

watch sb do，没有watch sb to do sth这个表达。
watch sb do的被动语态是sb be watched to do，这里才有to do 形式。
表示看到某人的整个动作,但不强调正在进行。
另外watch sb doing 则为看到某人正在做某事，强调正在进行。

前者。动词不定式、动名词用法要点讲解
作主语
1.不定式作主语
动词不定式作主语时，句子的谓语动词常用单数，其位置有以下两种：
（1）把不定式置于句首。如：
To qet there by bike will take us half an hour.
（2）用it作形式主语，把真正的主语不定式置于句后，常用于下列句式中。
①It+be+名词+to do
It's our duty to take good care of the old,
②It takes sb +some time+to do
How long did it take you to finish the work?
③It+be+形容词+for sb+to do
It is difficult for us to finish writing the compositionin a
quarter of an hour,
④It+be+形容词+of sb+to do
It is stupid of you to write down everything the teachersays.
⑤It seems(appears)+形容词+to do
It seemed impossible to save money.
在句型③中，常用表示客观情况的形容词，如：
difficult,easy,hard,important,impossible,necessary
等；在句型④
中，常用
careless,clever,good,foolish,honest,kind,lazy,nice,right,silly,s
tupid,wise等表示赞扬或批评的词。在不定式前的sb，可看作其逻辑
主语，这一句式有时相当于Sb is+形容词+to do句式，如：It's kind of
you to help me with my English.,=You are kind to help me
with my English.
2.动名词作主语
Learning without practice is no good.
动名词作主语时，也常用It句式。如：
①It's +no good(no use,fun,a pleasure,a waste of
time)+doing..
It's no good reading in dim light.
It's no use sitting here waiting.
②It's+形容词+doing
It's dangerous swimming in the sea in windy days.

正确的是：watch sb do sth
因为watch后面的不定式不带to.

She watched a boy enter the room .

我的回答是
是watch
sb
do
sth
在感官动词see，watch，notice，
look
at，hear，feel，listen
to等后作宾语补足语时，不带to。