i don't know how to swim.i decided what to buy.这两个句子里面的how to swim 和what to buy是名词短语,为什么

i don't know how to swim.i decided what to buy.这两个句子里面的how to swim 和what to buy是名词短语,为什么
i don't know how to swim.i decided what to buy.这两个句子里面的how to swim 和what to buy是名词短语,为什么

i don't know how to swim.i decided what to buy.这两个句子里面的how to swim 和what to buy是名词短语,为什么
这两个句子都是宾语从句,相当于一个宾语,充当宾语的不是名词就是代词,这是名词啊

这两个句子都是宾语从句，相当于一个宾语，充当宾语的不是名词就是代词，这是名词啊