这句英语有没有语病？

没有语法的问题，但是说得很拗口。
if friendly enough, you will make friends with everyone.

Be friendly, you can make friends easily with every one.

的确不和谐，很搞笑

Being friendly,you two can make friends with each other.

没有语病,可以参考下
You should enough kind to make friend with each other

没语病