分句(Clause)是建立在词组基础上的语法单位。 所谓分句就是“主语(Subject)+谓语 (Predicate)”的语法构造。这就是说,并不是 任何一串词组都可以成为分句,只有当这些词 组结合成为“主语+谓语”的结构时,这才算是 分句。比如下面这一连串词组 the tale, three legs in the room并不能说明什么,因为它们没有结成 主谓关系,因而不是分句
A conditional sentence (or \conditional\ for short) is commonly composed of two parts: conditional clause main clause. Despite the many possible sequences of verb forms in conditionals, the following four types represent perhaps the commonest and the most useful ones:
