哪位英语语言学高手帮忙解答一下？

Pat found a book on Wall Street.
(1) Yes, it is ambiguous.There are 2 meanings: the fisrt one is Pat found a book about Wall Street. And the other is Pat bought a book somewhere on Wall Street.
(2) a book on Wall Street (meaning 1), on Wall Street(meaning 2)
(3) "on Wall Street" may be regarded as the adjectbial for the book or the adverbial of place.Thus, the meaning group can be divided in different ways.

2\Please state briefly how different branches of linguistic studies are connected together.
我想这题是要你解释 phonology, morphology, syntax,的意义和研究范围(我以前考试的时候遇到类似的题目是这样答的) .另外,其关系大概是各种分支如何分发出来的.查查书吧,具体内容我也不是记得很清.

3\难,考虑一下再答