He sat in the front row, his mouth half open.他坐在前排,嘴半开着。这里应该是his mouth half is open,还是his mouth is half open,half是副词?The people, their livelihood secure, now have the leisure to take up sports.their livelihood secure独立主格可以放句中?
the most important可以用作名词吗?比如下面句子中的 thing 可以省略吗?The most important (thing) is to stay calm. 最重要的是要保持冷静。The most important (thing) is not to admit defeat. 最重要的是不能认输。The most important (thing) is to earn enough money....
It is an equation complicated by worries over the South American's attitude should he not be picked.上句中的 should he not be picked 是 attitude 的同位语从句吗?同位语从句中可以有虚拟语气吗?谢谢老师的回答。