1.It was not necessary for Nancy to clean the flat. --> Nancy didn't_____________________________ 2.It's very heavy . I can't carry this suitcase. --> This suitcase is _________________________ 3.This bag isn't big enough I can't put all my possessions in it . -->This bag is________________________________

`1.` Nancy didn't  need/have   to clean the flat.

`->` Need + to V : Cần làm gì | Have to + V : Phải làm gì 

`2.` This suitcase is too heavy for me to carry.

`->` Be + too + adj + (for sb) + to V : Quá

`3.` This bag is too small for me to put all my possessions in.

`->` Be + too + adj + (for sb) + to V : Quá

1. Nancy didn't need to clean the flat.

→ It+tobe+(not)+necessary+for O+to V

= S+trợ ĐT+(not)+need to V: không cần thiết để làm việc gì.

2. This suitcase is so heavy that I can't carry it.

→ $S^{1}$+tobe/V+so Adj+that+$S^{2}$+$V^{2}$+$O^{2}$ : cái gì quá ... thật ...

3. This bag is so small that I can't put all my possessions in it.

→ S+tobe+(not)+Adj/Adv+enough for sb to V: cái gì không ... để làm gì.

= $S^{1}$+tobe/V+so Adj+that+$S^{2}$+$V^{2}$+$O^{2}$ : cái gì quá ... thật ...

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