8.中文：他将于七月五日去美国。

　　(误)He was angry with what I said.

　　(正)He was angry at what I said.(表示因某事生气介词用at或about，对某人生气用with.)

9.中文：他藏在一棵树后。

　　(误)He hid himself after a tree.

　　(正)He hid himself behind a tree.(after表顺序，behind表位置。)

10.中文：在老师的帮助下你会通过考试。

　　(误)You may pass the exam under the help of the teacher.

　　(正)You may pass the exam with the help of the teacher.(在某人的帮助下用with.)

11.中文：我父亲对我说玩火危险。

　　(误)My father said to me that it was dangerous to play fire.

　　(正)My father said to me that it was dangerous to play with fire.(play后接运动，球类比赛时是及物动词;后接玩的东西时是不及物动词，与with连用。)

12.中文：你真的看见那个年轻人打我弟弟的脸了吗?

　　(误)Did you really see the young man hit my brother on the face?

　　(正)Did you really see the young man hit my brother in the face?(打在脸上用in the face;打在鼻子上用on the nose.)

13.中文：就她的年龄而言，她看上去很年轻。

　　(误)She looks quite young in her age.

　　(正)She looks quite young for her age.(for表示就…而论，相当于considering.)

14.中文：在夜晚很安静。

　　(误)It is quiet at the night.

　　(正)It is quiet at night.(表示在夜晚用at night或in the night.)