1 I can meet you if you arrive before eleven.

→So long as you arrive before eleven, I can meet you

 So long as = as long as : miễn là, chỉ cần

2 She had never been so happy before.

→Never before had she been so happy.

Cấu trúc đảo ngữ: Phó từ + trợ động từ + S + V(chia) + O

3 It was not until she was 18 that she went abroad.

→Not until she was 18 did she go abroad.

Cấu trúc đảo ngữ: Not until + time + trợ động từ + S + V(nguyên)

4 I phone him as soon as I went home.

→Scarcely had I gone home when I phoned him.

Scarely: dùng để diễn tả một hành động nào đó xảy ra ngay sau một hành động khác. 

Cấu trúc đảo ngữ: Trạng từ + trợ động từ + S + V(chia) + O

5 We can only improve our skills by training hard.

→Only by training hard can we improve our skills.

Cấu trúc đảo ngữ: Only by + Ving/ Noun + trợ động từ + S + V(chia)

NL: You too ~~

1.so long as you arrive before eleven,i can meet you

so long as=as long as:miễn là

2.never before had she been so happy-đảo ngữ-never before+auxi+S...

3.not until she was 18 did she go abroad-not until S1+V1...auxi S2+V2

4.scarely had i gone home when i phoned him-scarely+S1+had+Ved/c3 when+S2+Ved/c2

5.only when we can improve our skills by trainind hard-only when+S1+V1(+O1)+auxi+S2+V2

Auxi là trợ động từ