be careful　例如我说要开车出门，你就可以用be careful

be careful[英][bi: ˈkɛəful][美][bi ˈkɛrfəl]

n.注意; 当心，小心;

1.France's mainstream parties should be careful.

法国的主流政党对此应该小心。

2.Be careful of what province/ state you live in.

注意你所住的省/州的名字。

3.But perhaps those who throw this phrase about should be careful what they wish for.

但那些胡乱引用这句话的人，应当留心它的后果。

Be careful是小心的意思:)

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