3).The government has to calculate the likely effects on revenues of a big drop in the oil price.

政府必须估算出油价大幅度下降对财政收入可能产生的影响。

4).The scientists calculated when the spacecraft would reach the moon.

科学家推算出宇宙飞船抵达月球的时间。

5).This advertisement is calculated to attract the attention of house wives.

这个广告以引起家庭主妇们的注意为目标。

6).The speech was calculated to win votes.

那次演讲意在拉选票。

【归纳用法】

calculate是动词，主要义项有：. (1) 计算；核算 ⑵估计；推测 ⑶有...企图；打算, be calculated to do sth.目的是......

calculate on/upon指望；预测，名词calculator计算器。

2. simplify

【观察思考】

Although I was young I could simplify difficult sums.

尽管当时我很年轻，但是我能简化一些复杂的数学题。

1) This dictionary tries to simplify the meanings of words.

这本词典努力把词意简化。

2) He tried to simplify the story for the younger audience.

他尽力简化这个故事便于年轻读者理解。

3) I can understand the book--it's written in simple English.

我能读懂这本书--它是用简单的英语写的。

4) They live a simple and happy life.

他们过着简朴而幸福的生活。

5) The questions can be answered quite simply.

这些问题回答起来很容易。

【归纳用法】

simplify为动词，意思为 "简化；精简；使易懂"。

simple 为形容词，意思为 "简单的, 简明的; 朴素的;单纯的"。

simply为副词，意思为"简单地；简明地：直率地；仅仅；完全"。