现在完成时例句：I have finished reading the book,read要加ING?

现在完成时例句：I have finished reading the book,read要加ING? 英语现在完成时问题I have gone at this school since 2012.这句话为什么用at?词组不是应该是have gone 请问区别,求用例句解答. 现在完成时I用have还是has? I an have some had 改成现在完成时 现在完成时表示将来例句When you have rested, I’ll show you the garden 这句话正不正确?不是说现在完成时不能与when连用吗?急急急！！！！！！ 顺便问一下，study的过去式是什么？应该是studied吧 现在完成时的例句 现在完成时 have 后面不是加延续性动词吗 那 have done怎么回事现在完成时 have 后面不是加延续性动词吗 那 have done怎么回事 最好有例句 过去将来时例句,现在完成时例句,谢谢 I have been to Beijing twice 为什么用现在完成时 英语好的进,I have a job变成现在完成时. 现在完成时变成一般疑问句：I have watched TV. 现在完成时：I have listened to ,是否要加to I have already had a crash 这句是现在完成时吗? I have had breakfast.是什么现在完成时还是过去完成时? 现在完成时+by+时间.可以这样吗?有例句比如：I have forwarded my materials to your office by May 15.我已经在5月15日寄出了我的材料. 现在完成时和一般过去时某些时候可以通用吗?例句见下.I have already finished my homework .换成一般过去时不可以吗?还有我感觉某些时候又不能互换 I have already went to the post office.现在完成时语法对吗?最近查找资料英语现在完成时的语法have done,看到一个百度问问里面有个人做了这样的回答,我想知道他的例句里面为什么用went而不是用gone? have done的用法要例句I have done。