第一， 情景對話

A: What's happened? Why are the students kicking up such a row?

發生什么事了？學生們怎么大吵大鬧的。

B: It is because of one of those things that keep happening these days.

因為近些天發生了一件事。

A: What is it?

什么事？

B: The school authorities asked them to sell some products and forced them to finish their quotas. And most of the students find it hard to sell.

學校讓他們賣東西，還讓他們定額完成任務，大多數學生發覺很難賣。

A: That is indeed a problem. Their parents should join them and raise their opposition against such an unfair task imposed on the students.

這確實是個問題，他們的父母也應該一起來抵制這種加在學生身上的任務。

第二，文法解析

1. It is because of one of those things that keep happening these days.

解析1：keep happening的意思是“不斷發生”。表示不斷發生某事，可用keep，后面的動詞用v+ing形式。

解析2：that happening these days式限定性定語從句，修飾先行詞things。“those things that keep happening these days”的意思是“這些天來不斷發生的這些事情”。

2. And most of the students find it hard to sell.

解析：find it hard to sell中的hard是做find后的賓語It的補足語，to sell是動詞不定式，做形容詞hard的補足語。

3. Their parents should join them and raise their opposition against such an unfair task imposed on the students.

解析：imposed on the students是過去分詞短語做定語，修飾task。“task imposed on the students”的意思是“強加于學生身上的任務”。