现在分词做主语的谓语单复数还有动名词的各种用法

Question

比方说是Swimming and playing basketball is my favorite 还是 Swimming and playing basketball are my favorite呢？

Answer 1

先更正一下，做主语的-ing形式不叫现在分词，叫做动名词。
两个或两个以上的动名词，不定式充当句子主语时，谓语用复数。
如：
Swimming and playing basketball are my favourite sports.

Answer 2

非谓语动词作主语时谓语用单数.但是如果是两个并列的就象是两个名词并列时候就用复数了.给你两个例子吧
To learn english well, listening is very important.
listengling作主语,动词用is
To learn Enlish well, listening and speaking are very important.
这句话中主语是listening和speaking，所以用了动词are