Als je de tijd hebt gekozen...
Past Simple: stam + ED of 2e rijtje onregelmatige ww.I bought a car yesterday. They talked a lot last night.I didn't buy a car yesterday. Did they talk a lot last night?Present Perfect: have / has + voltooid deelwoord (stam + ED of 3e rijtje onregelmatige ww.
We have lived here since 1999. He has already eaten a lot.
We haven't lived here since 1999. Has he already eaten a lot?