适合初中生唱的英文歌曲有很多，以下是一些推荐：
1. "A Thousand Years" - Christina Perri
2. "Count on Me" - Bruno Mars
3. "Shape of You" - Ed Sheeran
4. "All of Me" - John Legend
5. "Someone Like You" - Adele
6. "Roar" - Katy Perry
7. "Runaway" - Avril Lavigne
8. "My Heart Will Go On" - Celine Dion
9. "New Soul" - Yael Naim
10. "Big Big World" - Emilia
11. "Yesterday Once More" - Carpenters
12. "Silent Night" - Traditional
13. "You Are Not Alone" - Michael Jackson
14. "Like a Star" - Corinne Bailey Rae
15. "The Rose" - Bette Midler
16. "I Believe I Can Fly" - R. Kelly
17. "The Day You Went Away" - The Carpenters
18. "Lemon Tree" - Trine Rime
19. "My Love" - Paul McCartney
20. "Jingle Bells" - Traditional
21. "Glad You Came" - The Wanted
22. "Fight Song" - Rachel Platten
23. "Hand in Hand" - Koreana（1988年汉城奥运会主题曲）
这些歌曲旋律优美，歌词简单，适合初中生练习英语发音和节奏感。你可以根据自己的兴趣和学习程度选择合适的歌曲进行学习。