It runs fast.
It runs fast.这是什么动物
He runs fast.
She runs quite (fast)
he runs fast.这是系表吗?
She runs fast ,还是she runs fastly?
John runs very fast.Peter runs fast.(句意不变)
He can runs fast.改错
He runs too fast ____.
she runs fast 改为感叹句
Longlong fast Jim than runs
A kangaroo runs so fast that it can catch up with a train