be anxious to表示“急于”、“渴望”，其中to是不定式符号，后面接动词原形;

　　be anxious for表示“渴望”，后面接名词或代词时，强调渴望得到某物或渴望了解某事;后面接sb.to do sth.时，表示“渴望某人能做某事”，其中for sb.to do sth.是不定式复合结构。

　　be anxious about 表示“对…感到不安”、“为…担心”、“为…忧虑”;

　　be anxious that表示“渴望”，后面接从句，that从句的谓语动词须用虚拟语气;

　　[EXERCISES]

　　①I ____ the result of the examination.

　　②We ____ know the result of the examination.

　　③We ____ Mr Liu to help us with our English.

　　④Mr Li ____ a new car.

　　⑤They ____ arrive home before dark.

　　(Key: ①am anxious about/for ②are anxious to ③are anxious for ④is anxious for ⑤are anxious to)

　　1) The girl ____ a new dictionary. 2) All the students ____ their results of this examination. 3) Everyone _____ know their results of the competition. 4) We ___Mr Zhao to return. 5) We _____ she should do her best.

　　Key: 1) was/is anxious for 2) are anxious about 3) is anxious to 4)are anxious for

　　5) are anxious that