7. 我们班又有五个学生入了团。

误：Five students in our class joined the League again.

正：Five more students in our class joined the League.

正：Another five students in our class joined the League.

析：again 表示“又”“再”，指动作的反复；more 或 another表示“再”“又”，指数量在原有基础上的增加。若以上误句要视为正句，则表示：我们班有五位同学又入了一次团，即第二次入团。

8. 她入党有十年了。

误：It is ten years ago since she joined the Party.

正：It is ten years since she joined the Party.

正：She joined the Party ten years ago.(www.hxen.com)

析：“It is + 一段时间 + since...”是一句型，意为“……有一段时间了”，注意不要在该结构的 since 前用 ago。

9. 他们同意我做这事。

误：They agreed me to do it.

正：They agreed to let me do it. / They agreed to my doing it.

析：不要按汉语习惯用 agree sb to do sth 来表示“同意某人做某事”，要表达此意，需改用其他结构。

10. 要是他这样说，那他就是个骗子。

误：If he said so, and he is a liar.

正：If he said so, he is a liar.

析：if 引导的是条件状语从句，后面的句子为主句，其前不能用并列连词 and(否则全句为并列句)。

11. 老师对我很生气。

误：The teacher was angry to me.

正：The teacher was angry with me.

析：表示对某人生气，一般用介词 with (有时也用 at)。 表示对某事(物)生气，通常用介词 at, about(在美国英语中也可以用 with)。

12. 你寄出的信有回音没有?

误：Have you had an answer of your letter?

正：Have you had an answer to your letter?

析：表示“对……的回答(答复)”，其后通常接介词 to。类似地，要表示“……的答案”，其后也接介词to：the answer to the exercises 练习答案