about后加什么
I'm definite about this.
我对这事毫无疑问。
You're completely mistaken about Jane.
你对简的看法完全错了。
He's ignorant about modern technology.
他对现代科技一无所知。
I'm definite about this.
我对这事毫无疑问。
You're completely mistaken about Jane.
你对简的看法完全错了。
He's ignorant about modern technology.
他对现代科技一无所知。