` -> ` Cấu trúc
` -> ` I + am / am not
` -> ` He /she / it / Danh từ số ít / Tên tiêng + Is / isn't hoặc Is + He /she / it / Danh từ số ít / Tên tiêng
` -> ` You / we / they + are / aren't hoặc are + You / we / they
` 1 ` am ( a )
` 2 ` is ( a )
` 3 ` is ( a )
` 4 ` is