句子结构问题

Question

1.In a society marked by competition,people have to face up with all kinds of pressure.
这句In a society marked by competition在句中做什么成分,marked是什么意思啊,看不懂这句.

2.That is why they prefer something less competitive and strenuous to something more demanding and challenging.
这句看不懂结构.

Answer 1

1. In a society marked by competition在句中做状语，mark是标记的意思，marked就是被打上……的记号，marked by competition做a society的定语，意思是在这个充满竞争的社会中，人们不得不面对各种各样的压力。

2. that is why是主句，后面they prefer something less competitive and strenuous to something more demanding and challenging是从句。
意思是：这就是为什么比起有要求和有挑战性的事来说，他们更情愿做少点竞争力和不累人的事。

Answer 2

1.状语；在一个竞争的社会中，人们不得不面对各种压力
2.that is way是主句，they prefer something less competitive and strenuous to something more demanding and challenging是从句。这就是为什么比起有要求和挑战的事来说人们更情愿做轻松简单的事

Answer 3

1、状语，
marked 为标记，标识的意思，在本句中表示：这个社会以竞争为标志

in a society which is marked by competition...
分词作定语

在这样一个竞争的社会，人们不得不面对各种压力。

2、
句子主要结构为：
that is why they prefer ... to ...

That is
why
they prefer
something ( less competitive and strenuous)
to
something (more demanding and challenging).

形容词修饰不定代词，一般在代词的后面。

这就是为什么他们更钟情于竞争少不紧迫的事情，而非要求高挑战性强的事情（东西）。