A: I study English;

B: I study French;

C: Here comes Xiao Wang.

D: Xiao Li will go;

Translation:

( 1)a∧b；

(2)? c→? d；

Explanation:

Unless p, q;

= q, unless p;

= Only P can be non-Q (otherwise it must be Q);

= If not P, then Q;

In English, unless translates as unless … or if not …? This means unless and if are not the same meaning.