Rewrite the following sentences without changing their meaning, using cues given: 1. You are not allowed to climb the trees in the park. (MUSTNT) ->You... 2. The last time I swam in the sea was three years ago. (FOR) V (swim) --> V2 swam --> V3 swum -> I havent ... 3. This is the first time she has visited a castle. (NEVER) -> She has ...

`1` You mustn't climb the trees in the park .

`-` S + mustn't + V-inf + O : Ai đó không được phép làm gì .

`2` I haven't swum in the sea for three years .

`-` S + have/has + not + V3/Vpp + O + time : Ai đó đã không làm gì trong bao lâu .

`-` for + khoảng thời gian .

`3` She has never visited a castle before .

`-` This is the first time + S + have/has + V3/Vpp + O : Đây là lần đầu ai đó làm gì .

`=>` S + have/has + never + V3/Vpp + O + before : Ai đó chưa bao giờ làm gì trước đó .

1. You mustn't climb the trees in the park.

mustn't + V1: không được làm gì (mang tính bắt buộc)

2. I haven't swum in the sea for three years.

S + has/have + not + V3/ed + for/since + time 

--> S + last + V2/ed 

--> The last time + S+ V2/ed + was + time 

--> It is / has been + time + since + S+ (last) + V2/ed 

3. She has never visited a castle before.

S + has/have + not/never + V3/ed + ... before

--> This/It is the first time + S+ has/have+ V3/ed

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