否定

I don't have the slightest idea.
我一点都不知道。
I have no idea．
我不知道。
No idea.
我不知道。
I don't know.
我不知道。
slightest是slight的最高级，在此表示的是“最微小的”。“I don't have the slightest idea.”比“I have no idea．”的否定语气更加强烈。

That's not right.
那是不对的。
A: She was born in 1854.
她出生于1854年。
B：That's not right．
那是不对的。

It's all wrong．
全错了。
A: The plane will take off at 4 pm.
飞机下午四点起飞。
B：It's all wrong.
全错了。

You've got it all wrong.= Wrong on both counts.
你全弄错了。

I don't think you're right about it.
我想你错了。
A: I don't think you're right about it.
我想你错了。
B：Oh, really?
哦，真的吗？

That's not what I mean.=I didn't mean that.
我不是那个意思。
You misunderstood me.
你误解我了。

Your idea is fundamentally wrong.
你的想法根本就是错的。
A: Life is meaningless.
生活真没意思。
B: Your idea is fundamentally wrong.
你的想法根本就是错的。
fundamentally ad. 根本地

It's actually not the case.
实际情况并非如此。
A：You must be very busy.
你一定很忙。
B: It's actually not the case.
实际情况并非如此。

Certainly not= Of course not.
当然不是。

I don't think so.
我不这样认为。
A：She is cute．
她很可爱。
B：I don't think so．
我不这样认为。

There's no need to start out that early.
没有必要走得那么早。
A：Could we start at twelve?
12点出发可以吗？
B: There's no need to start out that early. Let's make it one o'clock and we still leave half an hour's margin.
没有必要走得那么早，咱们定在1点吧，那样还能留出半小时空余时间。
start out“出发，动身”

How could that be?= How could that happen?
怎么会这样？

No way.= Never.= Definitely not.= Absolutely not.
绝对不是。
非常坚决地否定或拒绝。

I'm very sorry I can't.
对不起，不行。
A: I've run out of money. Can you lend me 100 dollars?
我的钱用光了，你能借我100美元吗？
B：I'm very sorry I can't.
对不起，不行。

That makes no sense．= That doesn't make sense.
那也太没道理了。
make sense“有意义，讲得通”

I'm not talking about that.= That's not what I'm talking about.
我没说那个。
A: The movie is very interesting.
电影很有意思。
B：I'm not talking about that.
我没说那个。
talk about“谈论，讨论”

Rubbish.= Nonsense.
瞎说。
A: You must fall in love with Jane.
你一定爱上简了。
B：Rubbish．
瞎说。
rubbish n. 废话，胡说八道

I'm afraid there's some misunderstanding here.
恐怕这儿有点误解。
A: Why do J have to pay it myself?
为什么我自己付款呢？
B: I'm afraid there's some misunderstanding here.
恐怕这儿有点误解。
misunderstanding n. 误会，误解