高中英语语法的两个完成句子问题
1.If times (have changed) ,have our ways of thinking changed too?
如果时代变了,那么我们的思维方式也变了吗?
2.Tony isn't here for lunch because his pet bird(died) this morning and he has been sitting for quite a long time in his room crying
托尼不在这吃午饭.因为今天早上他的宠物鸟死了,他就一动不动坐在房间里哭了好长时间.
解释一下第一题为什么不直接用changed
第二题为什么不用现在完成时,不是对现在的影响吗?