1. Identify the NC in each of the following sentences. Tell whether it is a Subject Noun Clause, an Object Noun Clause or an extraposed subject Noun Clause.

a.For Karen to quit now would be foolish. [subject noun clause]
b.Betty knew that I was busy. [subject noun clause]
c.My brother likes his friends to entertain him. [object noun clause]
d.We regret that we can’t see you more often.[object noun clause]
e.It is fitting that she receive the award. [extraposed noun clause]

Are these correct?

Which words in each sentence do you think is the NC?

a. For Karen to quit now

b. that I was busy
c. My brother likes his friends
d. that we can't see you more often
e. that she receive the award

I think those are it. I'm uncertain about (a) and (c).

a. correct

b. incorrect (Noun clause is correct, but its use in the sentence is not.)

c. incorrect (I see no NC in that sentence.)

d. correct

e. correct

So I'm supposing then that in (b) the whole sentence is the subject noun clause.

In (c) then...the clause is not a noun clause because it doesn't perform the function of one?

For b:

NC = that I was busy
But it's not serving as the subject. Think about what the other words are doing and then this NC's job should be obvious.

For c:
A noun clause (or any kind of clause) must have its own subject and verb. Sentence (c) doesn't have that. It has --

My = possessive pronoun
brother = noun, subject
likes = main verb
his = possessive pronoun
friends = noun, direct object
to entertain = infinitive verb form
him = pronoun, direct object of the infinitive

Ohhhh... I thought in essence any sentence then would have a clause. Thank you, that was enlightening.

:)

You're very welcome!