Your后面怎么一下用is一下可以用are?Theproblemwithyoureyesisthattheyplaytricksonyou.Neveruseifyoureyeisinjured,irritatedorinfected.Duringthatsplitsecondthatyoureyesareclosed,youaretemporarilyblinded.是什么原

Question

Your后面怎么一下用is一下可以用are?
The problem with your eyes is that they play tricks on you.Never use if your eye is injured,irritated or infected.During that split second that your eyes are closed,you aretemporarily blinded.是什么原因呢?和名词有关系吗
你的意思your用is.you用are.那怎么有很多句子your lips is so beautiful and that your dress are also very pretty!During that split second that your eyes are closed,you aretemporarily blinded.名词复数可以用are你看!

Answer 1

前者 主语是 The problem 所以用is .with your eyes是定语
后者 从句中的 主语是 your eyes所以 用are