be careful；讀音：英 [bi: 'ke?fl] 　 　 美 [bi: 'ke?fl] 　 ??；解釋：當(dāng)心, 注意；列句：；

1.Be careful about what you say.；對你所說的話要小心。；

2.You should be careful when making a promise.；你應(yīng)當(dāng)謹(jǐn)慎做出承諾。；

3.Be careful!；一定要小心??；

4.Be careful crossing the road.；過馬路要當(dāng)心。；

5.Be careful of that viper; he is dangerous.；小心那個(gè)陰險(xiǎn)的人，他很危險(xiǎn)。；

6.Be careful of that chair; it's a bit rocky.；當(dāng)心，那椅子有些不穩(wěn)。；

7.Be careful when you cross the road.；過馬路時(shí)要當(dāng)心。；

8.Be careful not to lose too much liquid by evaporation.；小心，不要因?yàn)檎舭l(fā)作用而失掉過多的水份。