为什么在这句话中不加on?:kay is going to the doctor Saturday morning.

为什么在这句话中不加on?:kay is going to the doctor Saturday morning. My name is kay. what'( )name?( )name is kay 谢安琪为什么叫Kay妈.kay是英文名, It is about 100 meters along on the right.中为什么有along?它在这句话中的意思是什么? Kay is going to the doctor---- Saturday morning and going to the mall ---Sunday.A.不填；on B.in；on C.on；in D.in；不填 The ball which is on the floor is mine.这句话对吗?为什么? 英语翻译1、后天凯（kay）不得不上化学课.（go）在这个句子中要用上go2、如果今天没空的话,我么可以定在这个周日.（free）这句话中要用free The woman living next door is on holiday.这句话为什么不对 Our class is planning to put on an English plan next saturday.这句话为什么用put on There is an book on the desk 这句话错在哪里,如何改正 everyone in our class is on vacation last week这句话错在哪 When is your birthday?It`s on this Saturday.这句话错在何处? You book is on the desk 这句话错在哪了 The cat on the tree is small.这句话错在哪里? Lt is on the desk just now.这句话的错误在哪里? A dog is siting on the chair.这句话错在哪? carry on your work这句话对吗,错的话错在哪?the answer is carry on with your work