這個位置有人坐嗎?三種說法:(1) Is this seat taken?(2) Is anyone sitting here?(3) Is there someone sitting here?這個位置有人坐嗎?三種說法:(1) Is this seat taken?(2) Is anyone sitting here?(3) Is there someone sitting here?這個位置有人坐嗎?三種說法:(1) Is this seat taken?(2) Is anyone sitting here?(3) Is there someone sitting here?