（1） About average
— no better or no worse than others.
— 符合一般水平
Example: Some staff's performance is about average. They have never proved better.
（2） About time
— the appropriate time.
— 差不多到時候了
Example: You have been working for quite a while. It's about time you had a new car.
（3） About to
— ready to
— 即將；正要
Example: We were about to go out when it suddenly rained.
（4） Back to back
— with the back facing the other.
— 背靠背
Example: Stand back to back, boys! Let me see who is the tallest.
（5） Back to front
— with the back placed where the front should be.
— 前后顛倒
Example: You got your pullover on back to front.
— thoroughly
— 透徹地
Example: All the people here know the government's major policies back to front.
（6） Back up someone/something
— support someone/something.
— 支持某人／某事
Example: ① No matter how, we should back up our most respected representative.
② Some new evidence backed up the prosecutor's argument.
（7） Call on/upon someone
— visit someone
— 訪問某人
Example: When are we going to call on our new neighbours?
（8） Call on/upon someone to do something
— invite someone to speak, etc.
— 邀請
Example: Without further ado, let me call upon our distinguished guest to speak to us.
— appeal to someone to act.
— 懇求；促使
Example: In times of difficulties, we will have to call on the public to make donations.
（9） Call out someone
— order officially.
— 召喚
Example: During the riot, the chief of police had to call out the riot police to restore law and order.
（10） Damp（en） something down
— make a fire burn less strongly.
— 使火燃燒緩慢下來
Example: It was a moonlit night, so the campers dampened down the fire.
— control and reduce something; suppress something.
— 抑制；減弱
Example: ① Some boys were over-zealous and we had to damp down their enthusiasm.
② Lack of support has damped down political dissidents' activities.
（11） Dance attendance on/upon someone
— do what someone wants without asking.
— 侍候某人，聽其差遣
Example: The manageress sat still, expecting everyone to dance attendance on her.
— no better or no worse than others.
— 符合一般水平
Example: Some staff's performance is about average. They have never proved better.
（2） About time
— the appropriate time.
— 差不多到時候了
Example: You have been working for quite a while. It's about time you had a new car.
（3） About to
— ready to
— 即將；正要
Example: We were about to go out when it suddenly rained.
（4） Back to back
— with the back facing the other.
— 背靠背
Example: Stand back to back, boys! Let me see who is the tallest.
（5） Back to front
— with the back placed where the front should be.
— 前后顛倒
Example: You got your pullover on back to front.
— thoroughly
— 透徹地
Example: All the people here know the government's major policies back to front.
（6） Back up someone/something
— support someone/something.
— 支持某人／某事
Example: ① No matter how, we should back up our most respected representative.
② Some new evidence backed up the prosecutor's argument.
（7） Call on/upon someone
— visit someone
— 訪問某人
Example: When are we going to call on our new neighbours?
（8） Call on/upon someone to do something
— invite someone to speak, etc.
— 邀請
Example: Without further ado, let me call upon our distinguished guest to speak to us.
— appeal to someone to act.
— 懇求；促使
Example: In times of difficulties, we will have to call on the public to make donations.
（9） Call out someone
— order officially.
— 召喚
Example: During the riot, the chief of police had to call out the riot police to restore law and order.
（10） Damp（en） something down
— make a fire burn less strongly.
— 使火燃燒緩慢下來
Example: It was a moonlit night, so the campers dampened down the fire.
— control and reduce something; suppress something.
— 抑制；減弱
Example: ① Some boys were over-zealous and we had to damp down their enthusiasm.
② Lack of support has damped down political dissidents' activities.
（11） Dance attendance on/upon someone
— do what someone wants without asking.
— 侍候某人，聽其差遣
Example: The manageress sat still, expecting everyone to dance attendance on her.