—His family clocked up a lot of debts when he was in prison. —I cant imagine how difficult life was to them. He used to be the only one to support the faimily.这里它用difficult to them ,正确吗?和 dif...
例句:He ventured large sums of money on speculative stocks and was successful.He quickly accumulated a large amount of assets in this way.为什么sums of后接名词money,不需要用复数 ? (a sum of 和 sums of...