1. It was a 2-week trip.
2. You had better not lend him the money.
(had better not + V_nguyên thể = shouldn't + V_nguyên thể: không nên làm gì, tốt hơn là không nên làm gì)
3. Tuan doesn't play tennis as well as Tuan does.
(so sánh bằng với trạng từ, dạng phủ định: S + trợ đt + V + as + adv + as ...)
4. He drives more slowly and carefully than I do.
(So sánh hơn với trạng từ : S + V_s/es+ more + adv-dài + than ...)