I have been riding the bike since I was ten years old.如何翻译since 后同样是be 动词表状态，第一句需要翻译为自从我病愈后他就再也没有来看过我。时间从表状态这个动作结束后开始算起。那第二句sinc

I don't know when I have been loving lover、i won't love you until i have been I realized then that they hadn't been heading for a flight,but had just been riding the shuttle.句子成分划分, 请问“I shouldn't have been here.”怎么翻译? i wouldn't have been +过去分词是什么时态?例句 i wouldn't have been scared anyways 改错I didn't know how riding a mortor-bike.how riding 改为 how to ride. I have been selling I have been trying I have ever been I too have been I have been to. I have been I have been in. I have been to London.My cousin hasn't been to London,either.(同意句) Neither he nor I（ ）to Beijing.A、have been B、has been C、haven’t been D、hasn’t been 有没有这个说法:I mustn't have been a doctor.可以说mustn't`````吗? I have never been there.He hasn’t been there,either.(改为同义句）I have never been there._______　＿＿＿＿＿ he. have .since did区别have .since have done?eg：I haven’t seen you since I’ve been back.I haven’t seen you since I was back.