改错(把错的写出来，并写出对的。）

The shoes are blong to me. 正确的
He buys a comic book on his way .
去掉to,因为home是副词,而非名词

方法有二:把改成 ,翻译为我知道如何做
另一个就是:I know what to do,翻译为我知道做什么

He buy a comic book on his way home.去掉to

I know how to do (about)it.把what改成how