非谓语动词的由来？

Question

任何语法现象都应该有它的来历。
比如不定式，当一个句子有两个动词时就要用不定式。
而现在分词和过去分词呢，希望各位大侠指点。
要有理论和例子以及改写过程，希望是原创哟 多谢！
还有动名词. 是否是为了简化句子才有分词这个语法现象？

Answer 1

当一个句子中已有一个动词时，为了不重复动词就要把另一个动词变成动名词或不定式，这个变的就是非谓语动词。

Answer 2

二、许多不及物动词加上介词或副词而变为及物短语动词，这时同样可以有被动语态。但应注意短语的整体性，在变为被动语态时不应丢掉后边的介词或副词。
1�动词＋介词
a．The doctor has already been sent for．
b．The news has never been heard of before．
类似的短语动词有：call on，look after，talk about，look at，ask for，wait for．．．
2．动词＋副词
a．A new play will be put on (上演) next week．
b．The problem has been worked out．
类似的短语动词有：put off (推迟)，think over，take off (脱、取消)，look up (查询)，sell out，use up (用光)．．．
3．动词＋副词＋介词
a．The poor were looked down upon before liberation．解放前穷人被人瞧不起。
b．He was looked up to by everyone．他被人们所敬仰。
类似的短语动词有：get out of，look out of，get on with，get along with (与。。。相处)，catch up with (赶上)，keep up with (跟上)．．．
4．动词＋名词＋介词
a．Lin Fen can take good care of your children．
1）Your children can be taken good care of by Lin Feng．
2）Good care can be taken of your children by Lin Feng．
b．They never paid attention to (注意、关注) the matter．
1）The matter was never paid attention to．
2）Attention was never paid to the matter．
类似的短语动词有：make fun of，make use of，make friends with，take part in (参加)．．．本回答被提问者采纳