雅思语法结构
雅思语法结构包括以下几种：
There+系动词+其他成分
这种结构用于表达事物的存在。例如：
There was a decline in the number of Japanese tourists heading to Australia.
adj./adv.比较级+than
用于比较两项事物。例如：
More food is now produced per head of the world’s population than at any time in history.
强调句型
通过将it is/was和that/which/who去掉，如果句子的剩余部分仍然是一个完整的句子，那么这个句子就是强调句型。例如：
It was in the morning that he found the lost wallet.
状语前置
将修饰动词的状语结构（如介词短语、分词形式或动词不定式引导的短语）放到句首。例如：
In addition to reading books, she also enjoys listening to music.