carry a tune 唱得准，发音正确

Neither of my brothers can carry a tune, but my sister is a good singer.

我的兄弟们唱歌都不成调，但我妹妹唱歌唱得很好。

out of tune 走调，音调不准

He sings out of tune.

他唱歌跑调了。

sing off key唱歌跑调

Don't butcher that song by singing off key.

别唱走调而糟蹋了那首歌。

sing along 跟着（别人的演唱或演奏的音乐）一起唱

The radio station played a Billy Joel song, and I found myself singing along to it.

电台在播放一首比利‧乔尔的歌，我发觉自己也跟着一起唱了起来。

sing up 大声唱，使劲唱

Sing up, sing up, ok!

大声唱，再大点声，好!

sing the high notes 飙高音

The tenor sang the high notes with ease.

这个男高音歌手高音唱得很自如。

lip-synch （演员）假唱，对口型

A lot of singers lip-synch when they appear on television.

许多歌手在电视上亮相时对口型唱。