We use the word that as a conjunction to introduce a subordinate clause to make a statement or provide more information. In many instances, the conjunction that may be left out without affecting the meaning of the sentence.
Some basic ideas of the conjunction 'that':
- That as a conjunction is commonly used.
- That introduces that-clauses.
- That-clauses can be the subject or object of a sentence.
- That can be left out but not if it begins a clause.
The following show how the conjunction that is used.
The conjunction that introduces that-clauses which are subordinate clauses. A subordinate clause cannot stand on its own as a complete sentence.
It is quite likely that we will be late for the firework display.
The part of the above sentence in bold is a that-clause. We cannot use it as a sentence.
Wrong: That we will be late for the firework display.
Wrong because it is a subordinate clause, also called a dependent clause. It must be joined to a main clause to make a complete sentence. The main clause in the above sentence is It is quite likely.
A that-clause can come at the beginning of a sentence as the subject or at the end of a sentence as the object.
We can leave out that wherever it may appear in a sentence but not if it is at the beginning.
Each is a pair of words which together are used as a conjunction:
1. providing/provided that = on the condition that; if.
- We will be there early providing that we can catch the first train.
- We welcome her to come along provided that she can stay out late.
That in the above two sentences can be omitted.
2. Assuming that = accept as true without proof.
- I think she will marry the wealthy boss's son even assuming that she doesn't love him.
3. Seeing that = because; accepting the fact that.
- You may as well join them, seeing that they need another volunteer.