But, in many cases, having " as well as" after the subject does not make the subject plural.

但是，在许多情况下，在主语之后加上as well as并不能使主语变成复数。

You use 'are' with plural subjects and 'is' with singular subjects.

复数主语用“are” ，单数主语用“is” 。

Some people like to solve the problem by changing the subject into a plural subject.

有些人喜欢把主语改成复数主语来解决问题。

So, when you take two individual subjects and you join them together, you're creating a two-or-more situation, or a two-or-more subject, therefore you have a plural subject.

所以，当你拿两个单独的主题并将它们连接在一起时，你正在创造一个两个或更多的情况， 或者一个两个或更多的主题， 因此你有一个复数主题。