My uncle has always been (as) mad as a hatter, always coming up with the wildest ideas.

Pakcik saya sentiasa (se)gila seperti tukang topi, sentiasa datang dengan idea-idea paling gila.

After working non-stop for three days, he was (as) mad as a hatter.

Selepas bekerja tanpa henti selama tiga hari, dia (se)gila seperti tukang topi.