from、on、in、at、for、it这几个（应该是介词）的用法,要题目或例子说明的!什么情况下用动词原形?什么情况下用一般现在时态,(一般现在时态具体在句子中是怎么用的?是后面是动词原形还是

What's this () English?It's an egg.[in、on、from、to、for、at、under、with】 i must keep on working hard ()it?at in on for为什么选at His few personal belongings made it possible for him to move from place to place ____.选项:a、at easeb、on timec、with eased、in time His few personal belongings made it possible for him to move from place to place( ).A:at ease B:on time C:with ease D:in time 这句话中的介词应该是用什么?理由?It develop a more active lifestyle ____ each other in your family.A on B for C at D from ususlly get up ( )11 o' clock ( )Sundays .A in,at B at,on C by,for D at,from 用介词at,in,on,for,from,to,by,with,into,between,before,of填空 谁能告诉我关于in,at,on,to,with,for,from,of的用法呀? in on at away out off back with of for about from介词短语 用for、with、of、to、at、from、in、on、about组成的词组 of for to from over on in at有什么区别 there are books ——many different sudjects in the library at/ on/ for /from解析 for,to,from,of,on,in,at.在句子中怎么用? we get there ____(in at on from for about)the same time It's time____have breakfast(in on at to from between?或者两者都可以? Is the letter ___your friend?Yes,it is.A.from B.in C.at D.on 什么时候用ON ,IN AT ,FROM,TO Workers build houses ( ) the wood from trees.用这些词填空,for ,on ,at ,to ,from ,in ,of ,with