English Grammar

English Grammar

1. go back to Ving/V：

          E.g. I have to go back to playing ball. = I have to resume playing ball.

          E.g. I have to go back to play ball. = This means you need go somewhere else in order to play ball again.

2. (1) because (conj.):
          後加完整句子
    (2) because of (prep.):
          後加名詞，前為完整句子
    (3) due to (prep.):
          後加名詞，前要名詞，不能為一般動詞（be 可)
    (4) owing to (prep.):
          後加名詞
    (5) since (conj.)
    (6) since (prep.): 後加過去事件或時間點
    (7) for (conj.): 前加逗點