Native people is just using 100 words?

英語の勉強のため『ネイティブはたった100語で話している！』デイビット・セイン著（ダイヤモンド社）を読みました．サンノゼにある紀伊国屋で購入したものです．
http://www.amazon.co.jp/%E3%83%8D%E3%82%A4%E3%83%86%E3%82%A3%E3%83%96%E3%81%AF%E3%81%9F%E3%81%A3%E3%81%9F100%E8%AA%9E%E3%81%A7%E8%A9%B1%E3%81%97%E3%81%A6%E3%81%84%E3%82%8B-%E3%83%87%E3%82%A3%E3%83%93%E3%83%83%E3%83%89%E3%83%BB%E3%82%BB%E3%82%A4%E3%83%B3/dp/4478980616

いい本ですね．参考になる言い回しが多くて勉強になります．語学って真似しないと覚えないですよね．今後，使って見たい言い回しをメモしました．気になる人は意味を調べてみて下さいね．

I'm with you.
What have you been doing?
This and That.
About when will you come?
Need I sign?
I'll let you know. / Let me know if you need any help.
It's iffy.
I'm up today.
Nah / Nope
Not again. / Now what's happen.
We made good time.
Is that so?
I'm going home.
I may have to ask you for help.
It's likely.
Something like that.
Who should I ask?
I get it. / I got it.
Do you see? / I see what you mean.
You made it!
I wouldn't mind.
I hope it works out.
I needed that.
That's way intersting.
You shouldn't say that.
Not right now, thanks.
I'd prefer not to do it.
How long will it take?
Not much. / Nothing much.
Say what!
For sure?
I'm easy. (I used this sentence on June 24)
That's something.
every now and then.
Might is right.
What are you intersts? ("What is your hobby." is not usual.)
Is there something on your mind?
Believe it or not.
This can wait.

いやあ大漁大漁．実際に使おう．