used to是加动词原形吗?

题目

used to是加动词原形吗?
She quickly put on her ciothes and .(wash) her face.
[附加问题：题中主语是she,谓语动词不是应该单三吗?题上为什么是put on,而不是puts on?]
I had no tiome . .(eat) breakfast.Then I .(take) a taxi to school.
I .(start) playing the piano when I was t welve years old.
today 用于什么时态,
在Today he walks to school.应该用的是一现吧?在today I went to the school trip.应该是一过吧?
请详细说明today的用法,
一篇作文是写昨天我第一次去学校参观,写那里的景物是there were还是there are?他们之间有什么用法呢?
Mary.(be) out when I called her.（最好可以翻译一下）
If you .for your favourite TV programs,you well feel sleepy.
a.stay up  b.set up c.stay at d.pick up

答案

我一个一个回答used to 关键看前面有没有东西.She uesd to do.She gets used to doing.She was used to doing.当uesd to 就这么光秃秃第出来做动词自然后面加do就是原型.但是也有词组get used to doing 和词组be use...