In English grammar^x, Using English^x, Tenses^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...

Susan, I understand the frustration you are feeling. Your language, Chinese, is what linguists call an "isolating language". All information, such as the time an action occurred, is conveyed by the choice and order of words in a sentence. There are no verb tenses. There are no plurals. In fact,...