单词与短语

perform

【归纳】perform是动词，意为：①做，履行，执行；②演出，表演；③（指机器等）工作，（指发明等）运用（常与well, badly, poorly等连用）。如：

Nikola Tesla performed his experiment over and over, working till midnight.

I'd like to hear these old songs performed live.

The engine performs well in cold weather.

The new drug has performed badly in tests.

【拓展】performance n. 表演，演出；（尤指出色的）表现，行为，成就；（良好的）性能，工作情况。如：

The theatre is putting on a performance of the popular musical "Cats".

She won a gold medal for her fine performance in the contest.

The customer was impressed by the machine's performance.

【即学即练】翻译下面句子。

1. Computers can perform all kinds of tasks.

　________________________________________

2. The opera was first performed in 1992.

　________________________________________

3. His performance in the test was not good enough.

　________________________________________

base

【归纳】base既可作名词，也可作动词。

★作名词时，意为：①（某物的）底部，（尤指）底座，基底；②（军队﹑探险队等的）基地，根据地；③基础，起点，基本原则。如：

The base of the house is strong.

Nice is an excellent base for exploring the French Riviera.

The family base was important to my development.