为什么不能用When (have) you (ridden) a horse 而要说when( did )you( rode )a house?为什么不能用When (have) you (ridden) a horse -- Last mouth而要说when( did )you( ride )a house?-- Last mouth

i have known him____he was a boy of eight years old为什么不能用when 为什么不能用When (have) you (ridden) a horse 而要说when( did )you( rode )a house?为什么不能用When (have) you (ridden) a horse -- Last mouth而要说when( did )you( ride )a house?-- Last mouth when did you hurt yourself last?这句话为什么不能用when have you hurt yourself last? when have you been there?这句话语法哪里错了?为什么 因为when表示时间状语 所以不能用？ 为什么不能用When (have) you (ridden) a horse 而要说when( did )you( rode )a house? 英语改错 为什么不能用when而是that 西班牙语yo soy和yo estoy有什么区别?yo estoy bien.为什么不可以说yo soy bien呢? When we harried to the station,there happened to be no bus at that time.中的to be 为什么不能用to have 这句话有错吗（英语）When have you finished your homework?是不是不能用完成时要用一般过去时啊?为什么呢? I __have injections when I got illA:have toB:need toC:ought toD:had to为什么不能用need to,要选had to 1、I have no pens 【or】pencils with me【为什么不能用and】2、We were walking along the river 【when】 it suddenly began to rain【为什么不能用while】3、My brother is very tall 【while】 i am very short【为什么不能用when 什么时候只能用while ,不能用when yes they may have done 为什么不能用can 为什么要用have,不能用has呢? 为什么never不能用在have开头的疑问句中 does he have any apples? 为什么不能用has many different places hold many games.为什么不能用have It is still a question when we shall have our sports meet为什么不能用that代替when?其中when引导的不是主语从句吗?不能用that引导吗?还是说后面的从句是一个时间状语从句,需要用when引导?