2. 【解析】why。考查名词性从句。心理学家Reetz知道为什么会出现这种情况。依据句意可知, 这里用why引导宾语从句。

3. 【解析】with。考查介词。be faced with sth. 为固定搭配, 意为"面对......"。

4. 【解析】graduation/graduating。考查词形变化。空白处所填词在句中作after的宾语, 故用graduate的 (动)名词形式。

5. 【解析】to blame。考查非谓语动词。be to blame常用主动形式表被动含义, 意为"应该受到责备"。

6. 【解析】chances。考查名词的复数形式。由形容词fewer可知应用可数名词的复数形式。

7. 【解析】themselves。考查代词。by oneself是习惯搭配, 意为"独自; 靠自己"。

8. 【解析】pleased。考查形容词。专家们说他们很开心看到越来越多的年轻人寻求心理帮助, 表示人的感受用pleased。

9. 【解析】realizing。考查非谓语动词。Once realizing. . . 是"连词+分词的结构, 省略了逻辑主语they, 分词动作realize与逻辑主语they之间是主动关系, 故用动词-ing形式。

10. 【解析】sooner。考查比较级。句型"the +比较级, the+比较级", 表示"越......越......"。

Ⅰ. 单句改错

1. He was late for the class surprised us.

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2. She knew nothing about his journey except he was likely to be away for five weeks.

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3. He said the book was interesting and he wanted to buy it at once.

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4. We are talking about if we should admit some more students into our club.

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5. The reason why he was dismissed is because he is careless and irresponsible.

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6. Who leaves the room last ought to turn off the light.

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7. He is said that he has written a new novel.

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8. That you have done might do harm to others.

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9. If he is an engineer is unknown.

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10. The problem is when will he come back.

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答案：1.在句首加That, He改为he

2. except后加that

3.在and后加that

4.将if改为whether

5.将because改为that

6. Who改成Whoever