help open两词连用时,为什么open要变为opening

help open两词连用时,为什么open要变为opening help 作名词用时是不是可数名词? Let me help you______(open)the window Help!How to open .fui files? 问题“what did you say just now?答案有I asked how I open the door”.和“I asked that I open...问题“what did you say just now?答案有I asked how I open the door”.和“I asked that I open the door.为什么就选I asked how I op you look so upset,what's wrong with you?the door _______.Can you help me?Awon't open Bwon't be open Ccan't open Dcan't be opened选a,为什么不用被动语态及其他的? 英语翻译1.with their help we opend a small bookshop.______ 2.do you mind my opening the window?______3.you can;t draw(支取）any money because the banks aren't open._____4.the museum is open to the public.______5.we used to have dinner in an op please __(help) him __(open) the door English help wanted.What is the meaning of house open or open house? 请问open为什么不双写加ing? 为什么open有三个读音? 植物呼吸作用时为什么消耗水 为什么要用时间顺序来写 为什么白炽灯用时间越长 电阻越大 look,the door is open,为什么open不加ing? break the door open ,还是openly为什么用open keep eyes wide open为什么不用open wide 为什么with their eyes open不是be open