从前，有一个人请朋友到家里喝酒。

    那个朋友喝了一口酒，当他正准备把杯子放到桌上的时候，突然看见杯子里漂着一条小蛇，心里就有点不安，不过还是勉强喝了那杯酒。

    回家之后，那个朋友就生了病。这个人去看他，才知道原因是他怀疑杯子里有小蛇。于是，这个人回家后很仔细地观察了一遍，为的是知道这件事的原因。

    结果，他发现墙上挂了一把弓，弓的影子倒映在酒杯里看起来很像一条小蛇。

    后来，他再把朋友请到家里，让他朋友看清楚墙上的弓，再请他看看杯子里的东西。他朋友终于明白杯子里并没有小蛇，他的病立刻就好了。

    这个成语比喻因疑神疑鬼引起的恐惧。

Once upon a time, there was a man who invited a friend to his house for a drink.

The friend took a sip of the wine, and was just about to put the glass on the table when he saw a small snake floating on it. He felt a little uneasy, but he drank the wine reluctantly.

After returning home, the friend was ill. The man went to see him and found that the reason was that he suspected there was a small snake in the cup. So the man went home and looked at his house very carefully, in order to know the reason for the incident.

As a result, he found a bow hanging on the wall. The shadow of the bow reflected in the cup looked like a small snake.

Then he invited his friend to his house again, and showed him the bow on the wall, and the things of the cup. When his friend finally realized that there was no snake in the cup, he was cured immediately.

Thisset phrase indicates the fear caused by extreme suspiciousness.

    【生词】

    语法

    1.为的是……（inorderto）

    她早起晚睡，为的是学好汉语。

    我做这些，为的是以后能够更好地生活。

    2.当……的时候（when）

    当我来到这里的时候，一切都非常陌生。

    当第一次用汉语交流的时候，我很紧张。

    小知识

    弓  bow

    “弓”是一个象形字（hieroglyph）。