buy up 和 buying up 的区别有这样一个句字,我想问下为什么要用buying up而不是buy up?Made her fortune buying up beach front land along the Black Sea coast once the Soviet Union crumbled.我问的是为什么要用现在分词?

buy up 和 buying up 的区别有这样一个句字,我想问下为什么要用buying up而不是buy up?Made her fortune buying up beach front land along the Black Sea coast once the Soviet Union crumbled.我问的是为什么要用现在分词? buy与buy up的区别 They are considering ______ before the prices go up.a、of buying the houseb、with buying the housec、buying the housed、to buy the house They are considering ______ before the prices go up.a、of buying the houseb、with buying the housec、buying the housed、to buy the house An investor gains buy buying stocks that go to up in value.句子分析?that 在句中做什么成分? suggest,want 和consider后面加什么?下面三题该选什么?为什么?7.They're considering___before the prices go up.A.of buying the houseB.buying the house C.with buying the houseD.to buy the house9.Peter suggested ___ at the next town.A.to st tidy up、clean up和wash up的区别 tidy up和clean up的区别? clean up 和 tidy up 的区别 clean-up和clean up的区别 Get up 和wake up 的区别? clean up和clear up的区别 cut-up和cut up的区别 stay up 和keep up的区别 chop up 和cut up的区别 walk up和climb up的区别 take up和put up的区别. eat up和come up的意思