relative adverbs we use: i. when/that to refer to a time (and can be omitted) ii. where to refer to a place. iii. why to give a reason, usually after the word reason (why can be omitted).
relative adverbswe use:i. when/that to refer to a time (and can be omitted)ii. where to refer to a place.iii. why to give a reason, usually after the word reason (why can be omitted).