He has been to many countries ,such as the United States and Japan.中such as 是否可以换成for exampl

不可以
l）for example强调“举例”说明，而且一般只举同类人或物中的一个作为插入语，且用逗号隔开，可置于句首、句中或句末。

for example一般只用来举一个例子，如：
Many people here, for example, John, would rather have coffee.这里有许多人，例如约翰很喜欢喝咖啡。
There are many kinds of pollution, for example, noise is a kind of pollution.有许多种污染方式，例如噪音就是一种污染。

不行