易混词语辨、练、析（Module 3）
一、 set off； set out； give off； give out
1. All the hotels are required to put in smoke detectors
which will __________ the alarm if fires take place.
2. Let’s ________ before six.
３. The fire doesn’t seem to be ________ much heat.
４. After a month, their food ________.
５. The t eacher ________ the examination papers.
Key: 1. set off 2. set out 3. giving off 4. gave out 5. gave out
【简析】 set off表示“使（机器、装置等）开动；启动”、“引起”（如１）；set out表示“出发；动身”、“开始”（如２）； give off表示“发出；放出（蒸汽、光线、热量等）”（如３）；give out 表示“用完；耗尽”、“分发”、“发出（气味、热量等）”（如４和５）。
二、 make up； build up； set up； take up
1． In our school, women ________ 60% of the teachers, and nearly half of them are advanced educators.
