介词的使用，一直是体现英文水平的重要标志！
介词不起眼，但却在英文中必不可少
你的英文水平怎么样？
这几个日常介词使用，你都能回答正确吗！
在周六上午
In Saturday morning ×
On Saturday morning
Mr Jack will come here on Saturday morning.
杰克先生会在周六上午来
对…生气
Be mad with ×
Be mad at
Don't be mad at me, like it's all my fault.
别生我的气，好象都是我的错一样
用到with的生气是
Be angry with
He was still a little angry with her.
他还有点儿生她的气
对...小心
Be careful about（小心某人 / 某物）
Be careful of（小心某人 / 某物）
You must be careful of what you say to him. He's quick to take offence.
你和他说话要多加注意，他特别爱生气
Be careful with（小心使用某个东西）
He's very careful with money.
他用钱非常谨慎
对...感到兴奋
Be excited in ×
Be excited about
I am so excited about taking WSE free class.How about you?
马上要去上华尔街英语的免费课啦，好兴奋，你呢？
现在你也可以来！
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