Examples
wǒ men我们zǒng shì总是yīng gāi应该dài shàng带上ān quán dài安全带yǐ fáng以防chū shì出事gù故。
我们总是应该带上安全带以防出事故。
We should always wear a seatbelt in case we have an accident.
系上您的安全带。
Fasten your seat belt.
要是汤姆系上安全带的话，他就不会死的。
Tom would still be alive if he had been wearing his seat belt.