例如：I don't know how I should solve this problem.這句從句裡I是主語，should solve是謂語，this problem是賓語，how是方式狀語。
具體用法
How do you like the film?你有多喜歡這電影？
How does he study hard?他學習有多努力
How busy are you?你有多忙？
How beautiful is she？她有多漂亮？。
對天氣的詢問通常用以下這兩種方式：
What is the weather/climate like?後可加時間或地點等狀語。
How is the weather/climate？後可加時間或地點等狀語。