还可以加名词形式
所以第一句delicious是形容词,所以如果用because of 的话,后面不能用delicious
而应该是I like apples because of their good tastes.
第二句：we didn't go out because of it rain heavily?这样改也是不对的
可以改成：we didn't go out because of the heavy rain.
记住后面是加名词的,不要加了一句话.你原来说的V+ing形式,实际上也是为了把词性改为名词.