Will you add more sugar to your coffee?中为什么不用add... in
网友回答
add:及物动词：加算,累积.add some water to the tea 给茶里加些开水.add one thing to another 加一物于另一物.Add three and seven and you will have ten.7加3等于10.
add in 算入
======以下答案可供参考======
供参考答案1:
add to把什么加到什么里面
add in 算入