Example of Colloquial English:
Colloquial english is like whatever, its how people normally talk like, not how they write. if you are writing colloquially just say something that uses the grammar and words you normally use, you know.
Example of Formal English:
Formal English is format typically reserved for academic or journalistic writing. It typically follows a more strictly regimented grammar structure.\////////%/\/\/\/
Answer:
I don't know if this answers your question, but the character for sing is 唱(chàng). To look for this character, the first radical that Annie should look for is 口(kǒu) because it is the first radical of this character.
