1. comparative adjective + dan:
Die boek is interessanter dan deze

2. even + adjective + als. This is just as English “as … as”:
Zijn auto is even groot als het mijne – His car is as big as mine.

3. net zo + adjective + als. This construction is more emphatic than the previous one:
Mijn huis is net zo mooi als de zijne – My house is just as lovely as his.

even – as, just
net – just, exactly