变化英文的名词change； changen.改变；变化；变更；变革；(会令人感兴趣或可喜的) There have been many changes in recent years. 近几年发生了许多变化。...
many后加可数名词。 例句 There have been many changes in recent years. 近几年发生了许多变化。 There arent that many people here. 这里并没有那么多...
there have been是现在完成时。 例句 There have been several muggings here recently. 最近这里发生了几起行凶抢劫案。 There have been strange happeni...
