必须: must; have to; be obliged to ; necessary 短语和例子必须指出 it must be pointed out that ...; 我们必须服从命令。 we must obey orders. 你必须按时到达那里。 you must be there on time. 我们必须马上出发。 we must start at once
已经: already 短语和例子已经到冬天了 。it's winter already. 你已经吃过早饭了吗? have you had your breakfast already? 节目已经完了 。 the programme is over
