以下是常套句歌詞英語：
1. 歌詞開頭常用句型：
* Today is a beautiful day.
* It's time to sing a song.
* Open your mouth and sing out.
* Hey, hey, let's have fun today.
2. 歌詞中間常用句型：
* Everybody sing together.
* Are you ready to dance?
* Let's rock and roll!
* I can do it better!
3. 歌詞結尾常用句型：
* Time to stop singing now.
* Let's end this song.
* That's all for today. Thank you!
* Hope you all enjoy the song!
以上是一些常套句歌詞英語，供您參考。