... BMX [that] I got for my birthday. a. This competition, which is held twice a year, is for Under 12 ’s.b. The trainer, who is my friend’s dad, was a champion. 16 5c l A u s e s 16 6G r A M M A ... its verb.26 .1 Activities: adjectival clauses and relative pronouns 1. Students bracket the relative pronoun and underline the adjectival clause in each of the following sentences, for example:Tomorrow ... following a preposition, we use the objective form (in 2 above) of the relative pronoun, such as for whom (or which), by whom, to whom etc., for example:To whom did you give those tickets?5....