Teaching Contents I Definition Notes are short letters written for various purposes Compared with a letter, a note is simple in form and often informal or colloquial in language Notes are not sent through the mail but left for the recipients to read or passed to the other by hand. In daily life, people use notes to give information and conduct communicationTeaching Contents I. Definition Notes are short letters written for various purposes. Compared with a letter, a note is simple in form and often informal or colloquial in language. Notes are not sent through the mail but left for the recipients to read or passed to the other by hand. In daily life, people use notes to give information and conduct communication