Question

It will take us about four hours ——（get）there by bus. It‘s cold in the room and

I have to wear a thick jacket __(keep)myself warm. Kitty is one of the ___(one)students to join the club. The students are very ____(excite)about their coming school trip. 要讲解！答案也要，必须要讲解详细！
顺便讲解how long 和how soon不同之处和语法上用法，谢谢，好的一定追加！不少于10分！

Answer 1

It will take us about four hours—to—get there by bus. It‘s cold in the room and I have to wear a thick jacket _to_keep myself warm. Kitty is one of the _first__(one)students to join the club. The students are very _excited- about their coming school trip.
第一句是句型：It takes/will take sb some time to do sth. 所以要填动词的不定式。
第二句是动词不定式用作目的状语。意思是“为了给我自己保暖”。
how long是指动作“持续”了多久。
how soon是指动作“还要多久”发生。
如我的回答对你有帮助，请及时采纳，谢谢！

追问

能解释一下不定式吗？谢谢，我弄明白一定及时采纳！

Answer 2

to get表示目的
keeping伴随
ones
excited短语be excited about
how long 提问的是：多长时间？
how soon 多长时间之后？

Answer 3

to get
to keep
first
excited

追问

为什么第一空和第二空不是过去式?不是说从句一般将来时态，主句应用一般将来时吗？是不是有了介词to？那为什么要加上to呢？是固定搭配吗？how long 和how soon不同之处和语法上用法能讲解吗？麻烦了！本人问题多了点，请多包涵！

Answer 4

to keep
first
excited
TO 就是为了的意思，TO+动词原型是固定搭配，表明为了怎么怎么样
动词原型单独出现只能做谓语，不做谓语的时候肯定是分词形式或者是不定式。
how long 是多长时间，how soon是多久以后