下面这句话consume为什么不用过去式?If your weight remains constant you must be using up all your calories,but if you are gaining weight then some of the calories you consume are being stored as fat.

下面这句话consume为什么不用过去式?If your weight remains constant you must be using up all your calories,but if you are gaining weight then some of the calories you consume are being stored as fat. We both tried to get the coins.这句话中的tried是过去式为什么get不用过去式? She tried to avoid my question这句话中的“avoid”回避,为什么不用过去式? Who made the boy stop crying?这句话stop为什么不用过去式? It is sunday today ,he goes for a picnic这句话为什么不用过去式? 请问英语过去式的语法Why couldn't he decide这句话是一般过去式,decide为什么不用过去式decided谢谢 here are all dinosaurs befor这句话对吗?如果对,are为什么不用过去式呢?可以换成were吗?为什么? He looked worried 这句话为什么有两个动词过去式一句话第一个动词变成过去式了,第二个不就不用变了吗,但是为什么这句话有两个动词过去式呢 we still have some time left.这句话中的left是什么意思?为什么不用leave?而要用过去式? I saw a boy fall off a bike,这句话saw用了过去式,为什么fall不用? There is no milk left.这句话是什么时态?left是过去式吧?那为什么用is不用was? since when do you guys know each other为什么不用过去式这什么这个地方不用过去式, never had a dream come true 为什么这句话里是come 不是camehad用的是过去式 为什么come不用came? He was absent on Monday.这句话是什么时态?为什么表示过去,但absent用原形不用过去式?还有 Was he absent from school last week?这句 I won't buy that I don't need it请问这句话中的will为什么要用过去式,如果不用will用don't she does not know london very well ,and she lost her way.这句话中 为什么后面是lost（过去式）而前面不用did呢? 这里用的是put 的过去式He put his textbooks on the table by the window.这句话.为什么不用he puts 是因为式一般过去时么? 请教语法题：Most of the people know it.这句话是“大部分人都知道这事”,为什么know不用过去式knew?