先回答你的第二个提问:
一般来说
where 表示”位置“
which 表示”关系“
比如
this is the house where I live
this is the car which I just bought
第一句也可以这样说
this is the house in which I live
(in + which 变成”位置“关系)
这里规律看似复杂,
最简单的处理方法是把句子反过来看,
如果对应的问句形式是
where do you ...用 where
反之,如果问题形式是 which do you ...,用which
例:
where do you live?=》 this is the house where I live
which is the car you own =》 this is the car which I own
which house did you live in?=》 this is the house in which I lived
至于你的第一个提问,
动词在句首时可以接很多词型,
究竟接哪个一般要看语境,
不是一两句话可以充分解答的.
下面提供一些例句:
Go where the action is (接连词 where)
Run fast and be home in time (接副词 fast)
He looks happy (接形容词 happy)
We will have doing this job a very competent young man from New York.(接 have doing)
英语是灵活的语言,从语法和规律学语言不容易,
最有效的方法是多读,多听.
希望帮到了你,
我是加拿大人,前海外英语老师.