造几个象I don't know how to use commas.的句子

求“I don't know how to use commas”的同义句“I am good at swimming” i don t know how ---(use) commas.i don t know how ---(make) I do not know how to use commas.这个句子是什么结构?how to use commas是 7.I don’t know.How do I use commas?（变成一个复合句） I don’t know I I don' know how to use commas是不是宾语从句 主语又是什么 I don't know how commas 该是什么 英语 改同义句：i don not know how i can use commas I don't know how to use the machine. 1,I don’t know how to use the telephone.2,How do you use the i don't know which one to choose.请造几个类似which ...to 的句子 I don't know how to use baiduhi.Can you tell me how to solve I don't know how to use a dictionary.同义句I don’t know — I — —