陈述句的主位结构

陈述句主要叙述某人做某事、某人发生某事或某物处于什么状态。因此，人或物作主位是最常见的，也就是说，在陈述句中，主位、主题、主语三者重合是常例，而句子的其他部分为述位^[12]。简言之，在陈述句中，主位通常是句子的主语。例如：

① He（T）was one of the best students in the class（R）.

② It（T）was quite sunny day（R）.

③ No matter how advanced the technology（T），quality demands intelligent，motivated human thought and action（R）.

④ What he has done（T）is to hurt me（R）.

⑤ What should be repaired（T）is that old car（R）.

⑥ What happened last night（T）was that the two criminals were arrested（R）.

⑦ That（T）is not what I meant（R）.

⑧ It was in 1997（T）that Hong Kong came back to China（R）.

⑨ It was in Shanghai（T）that we lived last year（R）.

⑩ It was Tom（T）who arrived first（R）.

It is the last point（T）that I will talk about（R）.

There（T）is something wrong with my car（R）.

在陈述句中，充当主位最多的是I等人称代词，其次是it 和there等非人称代词，然后是名词词组和名词性小句。