今天我們來談一種SAT寫作技巧，就是選擇最恰當的語法結構。在SAT寫作中，選擇合適的語法結構可以使句子意思的表達更為精確和簡練。以下原則是在考慮選擇何種語法結構時可以參考的原則：
1. 一個句子的主語和謂語動詞應該能夠反映句子中的最重要的意思。例如：
The situation that resulted in my grandfathers not being able to study engineering was that his father needed help on the farm.
從意思上來分析，上面這句話需要表達的重要的概念是grandfathers not being able to study，而在表達這個概念時，原句用的'主語是situation，謂語動詞是was，不能強調需要表達的重點概念，可以改為下面這句話：My grandfather couldnt study engineering because his father needed help on the farm.
2. 避免頻繁使用there be結構，例如下面的句子：
There were 25 cows on the farm that my grandfather had to milk every day. It was hard work for my grandfather.
可以改為：My grandfather worked hard. He had to milk 25 cows on the farm every day.
更簡潔的句式為：My grandfather worked hard milking 25 cows daily.
3. 把從句改為短語或單詞。例如：
Dairy cows were raised on the farm，which was located100 kilometers from the nearest university and was in an area that was remote.
