You perhaps know it for certain that an Adverb is that word that qualifies any part of speech save the noun and the pronoun. But in other grammar too you may find the definition elaborated in a different manner. There the definition goes thus- An Adverb is that particular word that is used to qualify a verb, an adverb and the adjective. But when we brood over the matter it seems that the second definition is not at all correct. For, it is Adverb that may qualify preposition and conjunction too.
Now we can discuss in details the Relative Adverb. It may seem a bit complicated when you are going to use it. Before brooding over the relative adverb you have to have a clear idea of the relative clause. The number of relative adverb is not much; hence the use is limited to some extent. Still you have to take care when you would go to apply them.
Again Relative Adverbs are in some respect same in form as the interrogative adverbs. But the basic difference that you may note is that like the interrogative adverbs they do not ask questions, rather join two sentences. So you have the sole right to define relative adverb in two ways. It can be used as an adverb and on the other hand it may be used as a conjunction.
Actually the adverb is called relative for two reasons:
a) The adverb is related to an antecedent that is expressed or understood. You may follow the tend when you use a relative pronoun.
b) This Relative Adverb is formed too from the relative pronoun.
Now let us elaborate. In the case of the antecedent that is understood you may use it in the following manner:
This is where my uncles lives.
In this sentence you can find the ‘ where ‘ that means the place in which. Again-
Tell me when you would come.
In this sentence ‘ when ‘ means ‘the time’ you come.
Now let us discuss the issue of ‘ Antecedent Expressed ‘.
Go through the examples minutely.
a) This is the place where my uncle lives.
b) Tell me the time when you would come.
Now the matter that you must keep in mind quite efficiently:
1) You must take care to use the relative adverb just after the noun when it is used in a particular clause. For example it can be said-
This is the house where my uncle lives.
2) Always try to use the relative adverb with an inanimate object. When you use ‘people’ as the subject you should use a relative pronoun such as ‘whom ‘. Never use the relative adverb in this case.
3) Always try to end the sentence after the relative clause. If you use run-on sentence it may pose some problems, hence it is better to keep the sentence short and to exact point.
4) It is advised that you should not use the relative adverb frequently. Try to follow different patterns of sentences so that your expertise is highlighted.