I don't ski you don't ski she doesn't ski we don't ski you don't ski they don't ski
Present continuous
I'm not skiing you aren't skiing she isn't skiing we aren't skiing you aren't skiing they aren't skiing
Preterite
I didn't ski you didn't ski she didn't ski we didn't ski you didn't ski they didn't ski
Preterite continuous
I wasn't skiing you weren't skiing she wasn't skiing we weren't skiing you weren't skiing they weren't skiing
Present perfect
I haven't skied you haven't skied she hasn't skied we haven't skied you haven't skied they haven't skied
Present perfect continuous
I haven't been skiing you haven't been skiing she hasn't been skiing we haven't been skiing you haven't been skiing they haven't been skiing
Pluperfect
I hadn't skied you hadn't skied she hadn't skied we hadn't skied you hadn't skied they hadn't skied
Pluperfect continuous
I hadn't been skiing you hadn't been skiing she hadn't been skiing we hadn't been skiing you hadn't been skiing they hadn't been skiing
Future
I won't ski you won't ski she won't ski we won't ski you won't ski they won't ski
Future continuous
I won't be skiing you won't be skiing she won't be skiing we won't be skiing you won't be skiing they won't be skiing
Future perfect
I won't have skied you won't have skied she won't have skied we won't have skied you won't have skied they won't have skied
Future perfect continuous
I won't have been skiing you won't have been skiing she won't have been skiing we won't have been skiing you won't have been skiing they won't have been skiing
Conditional
Present
I wouldn't ski you wouldn't ski she wouldn't ski we wouldn't ski you wouldn't ski they wouldn't ski
Present continuous
I wouldn't be skiing you wouldn't be skiing she wouldn't be skiing we wouldn't be skiing you wouldn't be skiing they wouldn't be skiing
Past
I wouldn't have skied you wouldn't have skied she wouldn't have skied we wouldn't have skied you wouldn't have skied they wouldn't have skied
Past continuous
I wouldn't have been skiing you wouldn't have been skiing she wouldn't have been skiing we wouldn't have been skiing you wouldn't have been skiing they wouldn't have been skiing