请问下面这句话的时态.today,foreign countries especially China and Japan have been willing to buy huge amounts of american debt even at low interest rates.anyone who can offer furture explanation?thanks a lot!

请问下面这句话的时态.today,foreign countries especially China and Japan have been willing to buy huge amounts of american debt even at low interest rates.anyone who can offer furture explanation?thanks a lot! 时态的使用How are you feeling today.这句话为什么是现在进行时态啊 he has not been out today.这句话是什么时态?怎么看的?结构是什么, must be going请问这句话是什么时态的? 这句话的时态分析? we set off for London just after ten.这句话的时态是什么,为什么? 一句话的时态问题How long have you been stay here?请问这句话是什么时态,并且说出这种时态如何使用, to finish the work for us is difficult today.这句话的同义句 how much about the teaching on Sunday?请问这句话的时态是什么? that girl has been here three times today.but now you can't meet her because she is going to Nanjin这句话的时态对吗?急. 请问这句话时态这样行么?咨询个句子,在百度文库看到一个句子说：宾语从句时态要一致,不能说 I thought you are free today.改为：I thought you would be free today.（过去将来时）我觉得前后对应,后面 today是什么时态的标志词 today搭配什么时态的词 When will you be in London from Italy today?请问be 在什么情况下使用be in?以及下面句子请看下面的句子：我主要想了解时态以及时态发生变化时be动词和形容词,动词等该如何相应改变?What time are you goin we have been waiting for almost an hour.这句话是什么时态?been 与 waiting的关系什么? she is written for this magazine since 1996这句话是什么时态?为什么She后面用的是is? thanks for having me as your guest为什么这句话的have是ing形式 这个句子是什么时态? since和for的区别时态时态!