A relative clause is a kind of subordinate clause which is attached to a head noun within a noun phrase.

There are two kinds of relative clauses: restrictive or defining relative clauses and non-restrictive or non-defining relative clauses.

Fill in the blanks with suitable present tense forms.

1.    They ————————- for Sydney tomorrow.

a)    Are leave
b)    Are leaving
c)    Leaving
d)    Have left

The subjunctive mood scarcely exists in present day English. It is marked by distinctive verb forms which are now confined to the verb be and third person singular forms of other verbs. Note that the subjunctive forms still exist in American English.

Ceiling, sealing and roof

Ceiling is the inside top of a room.
This room has a low ceiling.

Sealing is the act of setting a seal.
Please, seal this box.

In the following sentences change the verbs into their corresponding past tenses.

State whether the –ing forms given in the following sentences are participles or gerunds. In the case of participles, name the noun or pronoun they qualify. In the case of gerunds, state what function they serve in the sentence.

Rewrite the following sentences by changing the participle into a finite verb.