He stayed up (to watch)TV yesterday
分析：不定式作目的状语.
That's w(hy ) it's important to learn a second language
分析；WHY 为什么.
I come here (to see) you
分析：不定式作目的状语.
The noise (woke) me up this morning
根据THIS MORNING 可知是一般过去时.
I read the book three days a(go)
分析：THREE DAYS AGO 三天前.
There are many different kinds of plants in the f(ield )
分析IN THE FIELD 在田地里.
To my s(urprise ) ,Tom is a thief
固定用法：to one's surprise 令某人吃惊的是.
加油!不明白再问!