请站住，不要往前走了。

Qǐng zhànzhù, búyào wǎng qián zǒu le.

Please stop and don’t walk forward.

你先站住，不要往前走。

Nǐ xiān zhànzhù, búyào wǎng qián zǒu.

Stop first; don’t walk forward.

听到老师叫我，我马上站住了。

Tīngdào lǎoshī jiào wǒ, wǒ mǎshàng zhànzhù le.

When I heard the teacher call me, I stopped right away.