在句首时那种情况要用动名词呢?

题目

在句首时那种情况要用动名词呢?
先看两道题,顺便讲解下,
1.___with others,the poet leaves us a deeper impression.He often compares life___river.
compared ；to
2._____this road,you will get there.
选：following
我搞不太清楚什么时候要用动名词,什么时候用动词,第一道题为什么又是过去时呢?
Fllowing this road,you will get there.
Work hard and you will pass all the examinations.
为什么一个是following，另一个是work？

答案

1.前面的短语是状语,意为与……比较,the poet是被比较的,所以用被动语态,也就是compare.compare with 是把……与……比较 compare to是把……比作……,题目中意思是把生命比作河流 2.第二题也是一个状语,应为you和fo...