所謂破碎句，就是句子不完整，通常是沒有謂語(或者說謂語是動詞的非謂語形式，如分詞)，或者是從句單獨成句。

　　破碎句：She singing alone. (無謂語，singing是現在分詞)

　　正確句：She is singing alone.

　　破碎句：He did not come. Because he was sick. (從句單獨成句)

　　正確句：He did not come because he was sick.

　　所謂接連據，就是兩個句子直接連在一起，既未使用連詞，也未使用正確的標點符號。

　　接連句: Professionals such as lawyers or accountants usually work longer hours than factory workers they have greater freedom in planning their time.

　　正確句一: Professionals such as lawyers or accountants usually work longer hours than factory workers. However, they have greater freedom in planning their time.

　　正確句二: Professionals such as lawyers or accountants usually work longer hours than factory workers; however, they have greater freedom in planning their time.

　　所謂句子連接不正確，就是兩個獨立的句子之間以逗號連接，這是不合英語語法的。正確的做法是以連詞、分號、冒號、句號等連接兩個句子。

　　不正確句: Breaking chalk into two pieces is a physical change, there is no change in the composition of the chalk.

　　正確句： Breaking chalk into two pieces is a physical change, so there is no change in the composition of the chalk.

　　以上是托福寫作病句分析的內容，一篇好的文章是由一個個句子堆砌起來的，每一句話都是這篇文章的重點我們萬萬不可忽視，在這里面不僅僅體現了考生的語法用詞，還能體現考生對于題目的思路看法，以及對美國地道用語的運用。如果想了解更多美國留學相關信息，請關注立思辰留學360平臺。最后，預祝大家能在托福考試中取得理想中的成績。