In Present tenses^x, Conversations^x, English grammar^x

Hi Jingtian,In my opinion, your guess is right. This type of sentence is used to express the degrees of certainty. In the first conversation, two speakers are discussing the girl they have met somewhere else before, so they use the presnt perfect tense here. And in the second conversation, two...

Thank you JTT, for your replya and your special advice on the English system we have. I am not a native speaker so I have been trying quite hard just to learn how English speaker think when they try to communicate with a Laguage full with rules. Sometimes I just don't get it that in such a short...