As guides adverbial clause verbs to keep the original shape at the beginning of the sentence?

For example, an adverbial clause can be introduced, which means "although, although", but with a partial inversion structure, the form is as follows:

1. Adjective +as+ subject+verb. For example:

Tired as he was, he offered to help me.

2. Past participle +as+ subject+copula. For example:

Although the book is well written, the author is not satisfied and is going to revise it.

Although this book is well written, the author is not satisfied and intends to revise it.

3. Noun +as+ subject+verb. For example:

Although he is a student, he doesn't study hard.

4. Adverb +as+ subject+predicate. For example:

Much as I admire his courage, I don't think he did it wisely.

Although I admire his courage, I don't think it is wise for him to do so.

5. the prototype of the verb +as+ subject+another part of the predicate (modal verbs or auxiliary verbs may, might, will, would, etc. ). For example:

No matter how hard you try, you can't convince him.

I have never met such a capable person as John. (Shanghai 200 1)

A.as long as I have traveled

B.since I have traveled so many places.

C.although I have been to many places.

D. Because I have been to many places.

Test example 2 _ _ _ _ _, carolina can't open the door. (Guangdong 2005)

A. do her best

C.she might as well have a try

Key: 1 C 2。 A