The pattern
"Please make sure" plus a sentence (or "to" plus a verb) asks someone to check that something happens. "Please make sure the door is locked" is a clear, polite instruction with a small warning inside: this matters. It is standard at work, in emails and in any handover: before you leave, before you send, before the guests arrive.
Two shapes, same meaning: "Make sure you lock the door" and "Make sure to lock the door". In speech people often drop "please" with friends: "Make sure you eat something." With "I'll", it becomes a promise: "I'll make sure it's done."
Say it out loud
Tap a sentence to hear it. Say it after the voice.
With friends, "please" often drops.
A promise: I will take responsibility for it.
A polite way to check you understood correctly.
Check yourself
Practice · 3 min
Give or accept a clear instruction. Prompt on the left, one natural sentence on the right.
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Say it today
Use it once in a real conversation before tomorrow. Out loud counts, even to yourself.