副词
1. He sang loudly as he walked along. 他边向前走边大声唱着歌。
2. Come along with us. 跟我们一道去吧。
3. Tell him I'll be along to see him. 告诉他我一会就去看他。
介词
1.
1. I was driving my car along a muddy path. 我沿着泥泞的小路开车。