■我確信你會成功。

誤：I assure your success.

誤：I assure that you will succeed.

正：I am assured of your success.

正：I am assured that you will succeed.

析：assure 的意思不是“確信”，而是“使確信”, 其常用結構是 assure sb of sth 或 assure sb that(使某人確信某事)，注意其被動語態的使用。另外，assure表示“保證”、“擔保” 時, 其句型也是一樣。如：I assure you of its quality.(它的質量我可以向你保證)，I assure you that he will come. (我向你保證他會來)。

■他向我保證他會幫助我。

誤：He assured (me) to help me.

正：He assured me of his help.

正：He assured me that he would help me.

析：assure不能接跟不定式或不定式的復合結構作賓語，注意其常用結構 assure sb of sth。