Bob runs down the floor.runs 这句话如何翻译?

Bob runs down the floor Bob runs the fastest in his class. bob runs the fastest in his class 同义句bob runs()()()()()in hi down runs the river through the gorges.这里的runs是什么,run+s,还是ru 谁帮我翻译一下这句话?There is no bridge and the river runs too quickly Bob runs the fastest in my class.(同义句) Bob is ____ ____ ___ Bob runs the fastest in my class.(同义句）Bob is___ ____ ____in the rabbit runs q______. who runs faster the boys or the girls 为什么这句话里没有助动词 his car runs as fast as ,if not faster than ,a race car这句话如何 The earth runs around a sun 这句话哪里错了 the dog eats the bread and runs away.翻译