重点讲解：
1. go door to door
挨家挨户；
例句：On that night, children dress up and go door to door asking for treats or playing tricks.
在那天晚上，装扮好了的孩子们会挨家挨户地敲门，他们向主人要求款待，要不就会捣蛋。
2. knock on
敲；击；
例句：I duly knocked on his door at three o'clock.
我准时在三点钟敲了他的门。
3. the more...the more
句型；常表示“越……就越……”；
例句：The higher we climbed, the more awe-inspiring the scenery became.
我们爬得越高，风景越是让人叹绝。
4. get sick of
厌倦的；厌烦的；厌恶的；
例句： I get sick of hearing that music all the time.
我对整天听那音乐感到厌烦。
