1 Yesterday the sun shone less brightly than today (phải chia lại thì, quá khứ của shine là shone, dùng less)
2 That cake is less freshly madethan this one (dùng less)
3 Jim's younger brother behaves less politely than Jim (dùng less)
4 Teenagers acted less violently in the past than these days (chia lại thì, dùng less)
5 I speak less quickly than my sister (dùng less)