Read the following sentences:

Active: Do the children play football?
Passive: Is football played by the children? (NOT Do football played by the children?)
Active: Did Alice invite you?
Passive: Were you invited by Alice? (NOT Did you invited by Alice?)

There are as many clauses in a sentence as there are finite verbs. A finite verb has a subject. Infinitives, participles and gerunds are not finite verbs.

For and because

Constructing a sentence having a noun clause is very simple. One of the easiest ways is to begin a sentence like this:

He said that…

A noun clause acts like a noun. It can serve all the purposes a noun serves in a sentence. In the following examples we are comparing the five functions of a noun with that of a noun clause. The sentences are patterned on a similar fashion, but in the first one we have used a noun and in the second one we have used a noun clause.

At + clock time
In + part of day
On + particular day
At + weekend, public holiday
In + longer period

At

With clock times we usually use at.

A compound-complex sentence has two or more coordinating clauses and at least one subordinate clause.

Read the following sentence: