笨笨猫Shirley
理由英语是reason。
例句：
1、这个结果使我们更有理由保持乐观。
This result gives us all the more reason for optimism.
2、你没有理由忧虑未来。
You have no reason to be apprehensive of the future.
3、他以精神失常为理由获判无罪。
He was found not guilty, by reason of insanity.
4、你完全没有理由不去。
There's no earthly reason why you shouldn't go.
5、我为什么要帮你？给我一个充分的理由。
Give me one good reason why，I should help you.
胖纸没烦恼
reason: [ ri:zn ] n. 理由,原因,理智,理性 v. 说服,推论,下判断 [ 名词reasoner ] [ 过去式reasoned 过去分词reasoned 现在分词reasoning 第三人称单数reasons ] 例句与用法 1. She can reason very clearly. 她能很清晰地思考。 2. Copernicus reasoned that the earth revolved around the sun. 哥白尼论证了地球绕着太阳转。 3. We have reason to believe that he was murdered. 我们有理由相信他是被谋杀的。 4. The detective tried to reason out how the thief had escaped. 这个侦探反复琢磨想弄明白那个窃贼是怎样逃跑的。 5. He was excused by reason of his age. 他因为年龄的关系而得到宽恕。 6. It stands to reason that nobody will work without pay. 做工作不能白做，这是明摆著的事。
