The doctor decided to operate at once. ✬

I don't know how to operate this computer. ✬

Tom doesn't have enough experience to operate a train. ✬

The lawn mower needs gas to operate. ✬

I can't figure out how to operate this machine. ✬

Tom has no idea how to operate this machine. ✬

The doctor said it'll be necessary to operate. ✬

We have to operate immediately. ✬

We need to operate immediately. ✬

You don't know how to operate a forklift, do you? ✬