Some languages in the world heve universal relative clauses. Its universal is related to the role of constructing the clauses. There are eight strategies in constructing relative clauses; 1) the non-reduction strategy, 2) the gap strategy, 3) the word order strategy, 4) the nominalization strategy, 6) the anaphoric pronoun strategy, 7) the equivalent strategy, 8) the verb-coding strategy. The c…