象我這樣為老婆與未成年孩子在美國境內提交I-485，我是需要填寫2份485還是1份485？
-Two, respectively, for your wife and kid.
如果是2份（老婆一份，孩子一份）的話，是不是需要為每份485準備相應的材料(比如：693、864？）？
-Correct.
那郵寄時是要分開郵寄，還是可以合並郵寄？
-Either is fine.
485的費用是按一份收還是二份收？
-Two filing fees. These two cases are independent each other.
我看到還有一個I-485A，這個表需要填寫嗎？
-If your wife's income or assets is not included in the I-864, no I-864A is needed. Otherwise, your wife needs to file I-864A with your I-864.
