It can be seen from the above, by adding adverbial modifier, complement modifier and attributive clause, one simple sentence(underlined part) will develop to a principal and subordinate compound sentence with an attributive clause.

• 所以，如果句中词、短语和句子间，主、次要成分间插入并列、主从成分便会使句子变长;有的句中还出现了成分的省略、倒装和分割等，这就构成了更为复杂的长句。