most of them travel 40000miles to a satellite and then back to earth.back是动词还是副词,如果是副词为什么没有被修饰的词呢

most of them travel 40000 miles to a satellite and then back to earth.most能否换成much或many.back前面能加travel most of them travel 40000 miles to a satellite and then back to earth.then back to earth是什么成分 most of them travel 40000 miles to a satellite and then back to earth.travel是什么意思,是及物动词40000miles算宾语吗 Most of them are sweet. most of them--------young people Most of them are of my most of which与most of them有什么区别? most of them travel 40000 miles to a satellite and then back to earth.back前面加不加travel都可以吗如果加的话就是动词短语做地点状语吗?如果光back to earth是什么短语? Getting the Most Out of Your Travel Agent 是什么意思? Most of them like chinese food.翻译 most of them were expensive ones . 用them,some,travel,air,by,of拼成一句话 ___ haven't been to American.A.Most them B.Most they C.More of them D.Most of them Most of them are 咋做?Most of them are后面填啥? Most of them are students 同义句 （ ）of them () a student不是Most是Both most of them ,为什么most of 后面不是用名词theirs而用them? 选择:kangkang likes ＿＿＿A.most them B.most of them C.most of they most of them travel 40000miles to a satellite and then back to earth.back是动词还是副词,如果是副词为什么没有被修饰的词呢