accompany
[kmpni]
为（歌手或乐手）伴奏
If you accompany a singer or a musician, you play one part of a piece of music while they sing or play the main tune.
For example:
He sang and Alice accompanied www.58yuanyou.comhim on the piano.
他一边唱，艾丽斯一边为他钢琴伴奏。
Its noun form is 'accompaniment'. The//www.58yuanyou.com accompan//www.58yuanyou.comiment to a song or tune is the music that is played at the sawww.58yuanyou.comme time as it and forms a background to it.
For inwww.58yuanyou.comstance:
He sang 'My Funny Valentine' to a piano accompaniment.
他在钢琴的伴奏下演唱了《我可爱的情人》。
while [wal]
conjuntion uses 连词用法:
① during the time that something is happening
在…期间；当…的时候
We must have been burgled while we were asleep.
我们睡着时一定让贼入室偷了。
② at the same time as sth else is happening
与…同时
You can go swimming while I'm having lunch.
我吃午饭时你可以去游泳。
③ used to contrast two things
（对比两件事物）…而，…然而
While Tom's very good at science, his brother is absolutely hopeless.
汤姆很擅长理科，而他的兄弟绝对是不可救药。
④ (used at the beginning of a sentence 用于句首) although; despite the fact that…
虽然；尽管
While I am willing to help, I do not have much time available.
尽管我愿意帮忙，但是没有多少时间。
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