大家帮我看看这个complicated sentence和complex sentence在语法上的区别啊,哪个包含哪个

complex sentence是复合句.英文中还有simple sentence（简单句）和compound sentence（并列句）.
complicated sentence 是复杂句,就只是说复杂的不易懂的句子,可以包含以上三类,只要它们够复杂.如果要说的话,复杂句包含复合句.
complex sentence 一般含有主句和从句,例如：
I cooked dinner before my parents came back.
I enjoyed the book that you sent me.