SAT语法 -ing一类题

题目

SAT语法 -ing一类题
有一组 -ing的问题,我都很不解,
1.When he began to excavate the ruins,he unearthed artifacts indicating a 500-year occupation by indigenous people.这里indicating是对的.
2.In 1850,Jim,a Black American explorer,discovered in the mountains of the Sierra Nevada a pass soon becoming an important gateway to California gold-rush country.
这里becoming 要改成 that would soon become,我看不出来这1.2 两题有什么不同.
3.Uncertain how to proceed with the scene,the actors stopped,awaiting for future instruction from the director.
这里它改成了and awaited
4.The newspaper reported that having the increase in the minimum wage,many people are still having trouble making ends meet.
这里也是错的,
还有 -ing 什么时候修饰前面紧跟的名词,什么时候表示主语的动作,也搞不清.
比如：
5.The Pony Express was an ingenious system for carrying mail,having existed only briefly before the telegraph system made it obsolete.
A.原句,
B.(正确答案) mail; it was in existence only briefly,however,
解释给的是,这个having 修饰mail,不对,应该修饰 Pony Express.
为什么这个having 就是修饰mail,不能表示Pony Express的状态呢.
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另外还有一些类似的-ing
6.Unlike her best friend Margie,making the varsity soccer team as a freshman,Jill didn't make the team until her junior year.(错)

答案

OC,OG上的题~这些问题我以前都问过,我综合了几种人的回答,给你如下：是我当时问的.我个人解释：情况一：意思就是说,Wandering in the street,Tom found a shop.这里的TOM很明显是Wandering的发出者所以反过来Tom fou...