What kind of sentence structure is it?
***** NOT A TEACHER *****
Hello, Creamcake:
May I make a very
respectful suggestion? I think that if you post a complete sentence (not just the first three words), you will help the members to come up with answers.
1. First, I think it is
vital that we remember that sometimes "be" is NOT a linking verb. Please look at these sentences:
a. "The exhibition will be
in November"; "The opening event is
on October 16"; and "That was
before the war."
i.
The New Oxford American Dictionary (2001) says that with an adverbial, "be" can mean "occur" or "take place."
b. Kindly remember that fact as I offer a few ideas (not "answers").
2. I was wondering whether you were referring to such a sentence as: "
It is
because he has behaved so badly that he must be punished."
That sentence comes from A.S. Hornby,
A Guide to Patterns and Usage in English (first impression 1954), page 241.
That scholar tells us that the idea could also be expressed this way: "As he has behaved badly, he must be punished."
Unfortunately, the scholar does not diagram the first sentence for us.
With your permission, I shall
try to do so.
"It" is the formal subject. It means nothing. It is only a substitute word for the subject at the end of the sentence: "that he must be punished."
"is" in my OPINION is NOT a linking verb there. It is a full verb meaning something like "take place."
To better understand the structure, let's forget "it."
We then get "
That he must be punished is because he has behaved badly."
In my OPINION. the adverbial ("because he has behaved badly") modifies the verb "is."
In other words, it means something like "That he must be punished will take place because he has behaved badly."
Of course, you would never say/write "That he must be punished is because he has behaved badly." That sentence is used ONLY to explain the basic structure of that sentence.
If you were diagramming that sentence, then, it would be something like:
"It (that he must be punished) + is + because he has acted badly."
a. The noun clause "that he must be punished" is in apposition with "it."
b. The adverbial clause "because he has acted badly" modifies the verb "is" -- in my OPINION.