Question

问一道新概念英语2Lesson44（第201页）的一道题

They were going through the contents of the bag,___ she ran straight at them
A.For this B.That's because C.That' why D.That's so
疑问：答案选择C，为什么？还有For this、That's because和That' why 在用法上有哪些区别？

Answer 1

For this即for this reason，是因此，为此的意思。That's because：这是因为。
That's why：这就是为什么……
　　1.Some people will never learn anything, for this reason, because they understand everything too soon.有些人决不学习任何事情，理由是，因为他们对任何事情都懂得太快。
　　2.For this reason our stock, which we think will last several months, are now completely sold out.由于上述原因，原计划可以维持数月的(库)存货现已全部售出。
　　3.It is for this reason that we have to raise our price by5% to10%.为此有必要将该产品价格提升5至10。
　　That's because跟because用法一样。That's why和why用法一样，就不举例了。
希望可以对你有所帮助，满意望采纳～

Answer 2

A.For this为了这。表目的
B.That's because这是因为。前面是结果，后面接原因
C.That' why这就是为什么。前面是原因，后面接结果
D.That's so就是这样。
“他们正在袋子里穿行，这就是她为什么要笔直的朝他们跑。”不知道这句话想表达什么意思。。。