2) a new bike/ bad /an old bike. 3)this book/ beautiful/ that one. 4)Lan /intelligent/Hoa →. 5)a mouse/run/slow/ a cat. 6) I/swim/slow/he... 7)this car/ good/ that car 8) a red pen /bad/ a blue pen→ 9)Tom/happy/he..... Chó ý: -y, -ow, -er, -le, -et + ER. yên tĩnh clever 10)They/short/she→ -VÝ dô: happy →> happier cleverer : thông minh simple - narrow -> narrower simpler: đơn giản the cat (heavy) quiet -> quieter: