Only then did I understand ...
Had I not been busy this morning, I ...
Rarely has someone ...
Had he understood the problem, he wouldn't ...
Rarely will you hear ...
So difficult has science became that ...
Rarely do Witek see ...
Seldom has anyone seen ...
So difficult is the test that ...
So expensive was the ticket that ...
Not only was Michael tired, but also ...
Never have I understood less about ...
Hardly had Ania sat down when ...
Little do people realise how hard it is ...
No sooner had Janek finished dinner, when ...
Never had they seen so many ...
No sooner had I started vacation than ...
Not only did they arrive late but ...