看到这样一个句子:He came across a person he used to know when he lived on the farm. 他偶然碰到了一个他过去住在农场时认识的人。我对句中的 used to know 有些不解。因为 used to 的用法特点是“强调今昔比对”,即“原来……...
在不少书上看到,说是 be necessary to do sth 的主语必须是 it(形式主语)。如:Was it necessary to tell my mother? 有必要告诉我妈妈吗?Sometimes it is necessary to say no. 有时候拒绝是必要的。但是我觉得Am I necessary to tell my mother? 也很...
关于to the best of one’s ability 的用法,我已知它的意思(尽力,竭尽全力),在词典中也可查到例句:Just try to do the job to the best of your ability. 试着尽你所能将工作做好。He completed the job to the best of his ability. 他尽全力完成了工作。...