基于所提供的文本判断是否为正确的语法语句。
以下是一些句子，请判断这些句子是否符合语法:
1. She eat the cake.
2. He usually goes to work by bus.
3. I am read the book.
1. She eats the cake. (正确)
2. He usually goes to work by bus. (正确)
3. I am reading the book. (正确)