这两句答语都是正确的，其关键不是语法，而是习惯问题。如果在这样的场合你讲 I‘l...，have to,first,I‘ll,单词记忆法、语法用法，与have to,first,I‘ll, 相关例句、名人名言

have to单词相关例句：

To make your life a sound structrure that will serve others and fulfil your own potential, you have to remember that strength, however massive , can't endure unless it has the interlocking supprt of others. Go it alone and you'll inevitably tumble.——Zichler Edward, Admerican writer 要使你的生活成为有益于他人同时又能发挥你自己的潜力的牢固的建筑，你必须记住，除非与他人的支持联系在一起，否则无论多么大的力量都难以持久，单枪匹马必将一事无成。美国作家 爱德华.Z.
Co-operation is doing with a smile what you have to do anyhow. 所谓合作，就是面带笑容去做非做不可的事。
If we cannot get what we like, we have to like what we can get. 随遇而安。
You have to believe in yourself.That's the secret of success. 人必须相信自已,这是成功的秘诀.

You have to try to save money for emergency.
你应该试着存点钱以备不时之需。


If you want to hit the target, you will have to concentrate and focus.
如果你想射中靶子，你必须做到集中精神和专注。


We don't have to go to school on Sunday. Let's play!
周日不上学，咱们去玩儿吧！


Sorry I can't go out with you, I have to study for the exam.
抱歉我不能跟你出去玩，我还要准备考试呢。


Why do I have to go through these bureaucratic processes just to buy a house?
为什么我要经过那么多官僚程序才能买一套房子啊？


I'm wearing my raincoat, so I don't have to worry about the rain.
我穿了雨衣，这样就不怕雨淋了。

first单词相关例句：

There is always a first brave person who breaks step with the stam-peding masses fleeing in panic, who pauses to help another to his feet ,creating his own eye in the storm, The stuff of heroes is made, forged in the midst of tragedy, in the blink of an eye.——Norman Stephens ,American writer在惊慌乱逃的人群中，总有第一个勇敢者冲出，停下来扶人站起，在风暴中闪出自己的亮眼。英雄的素质铸成于转瞬之间的危难之中。美国作家   斯蒂芬斯.N.
No man can be a good ruler unless he has first been ruled. 没受过他人的统治，就不能很好地统治他人。
The first method for estimating the intellingence of a ruler is to look at the men he has around him.——Niccolo Machiavelli, Italian statesman 估理一个统治者的智力，第一个方法就是看看他身边的人。意大利政治家 马基雅弗里 .N.
Business underlies everything in our national life, including our spiritual life, Witness the fact that in the Lord's prayer the first petition is for daily  bread, No one can worship God or love his neighbor on an empty stoach.Woodrow  Wilson.  American    President生活包括精神生活的基础。不容置疑的事实是，在主祷文中向上帝祈求的第一件事是让我们天天有面包。没有人能饿着肚子敬奉上帝或热爱他的邻居。 美国总统    威尔逊  W.
First come, first served. 先来先卖。
The first blow is half the battle. 头炮打响，等于半个胜仗。
Whom the gods wish to destroy, they first made mad.——Euripiedes, Ancient Greek dramatist  上帝要谁灭亡，必先让他疯狂。古希腊剧作家 欧里庇德斯  
What's man's first duty? The answer's brief: To be himself. 人的第一天职是什么?答案简单:不伪饰自己.
What's a man's first duty? The answer's brief: To be himself. ( Ibsen )——    人的第一天职是什么？答案很简单：不伪饰自己。（易卜生）
What is a man's first duty? The answer is brief ; to be himself.——Ibsen, Nowegian dramatist人的第一天职是什么？答案很简单：不伪饰自己。挪威剧作家    易卜生