1.是否定句之后通常用or代替and.2.祈使句＋and =if,而祈使句＋or = unles.3.有时 and与 or可换,如：life and (或or) death (在死)；有时and no与or互换.4.在选择疑问句中,用or 不用and.5.在both 之后用and,在either之后用or.

and例句

1.Remember,keep a positive attitude and good things will happen.

记住：保持乐观的心态，好事自然会发生。

2.The world breaks everyone, and afterward, many are stronger at the broken places.

生活总是让我们遍体鳞伤，但到后来，那些受伤的地方会变得更坚强。

3.For what do we live, but to make sport for our neighbours, and laugh at them in our turn?

我们活着是为了什么？不就是给邻居当笑柄，再反过来笑他们。

4.When life gets hard and you want to give up, remember that life is full of ups and downs, and without the downs, the ups would mean nothing.

当生活很艰难，你想要放弃的时候，请记住，生活充满了起起落落，如果没有低谷，那站在高处也失去了意义。

5.Good luck is when an opportunity comes along and you're prepared for it.

好运就是当机会来临时，你早已做好了准备。

or例句

1.No matter where you go in life or how old you get, there's always something new to learn about. After all, life is full of surprises.

不管你生活在哪里，你有多少岁，总有新东西要學習，毕竟，生活总是充满惊喜。

2.Remember, happiness doesn't depend upon who you are or what you have; it depends solely upon what you think.--Dale Carnegie

请记住，幸福不在于你是谁或者你拥有什么，而仅仅取决于你的心态！

3.If your skin becomes red, sore or very scaly, consult your doctor.

如果皮肤发红、瘙痒或脱皮，要向医生咨询。

4.There is nothing sinister or conspiratorial about the export licensing system.

这种出口许可制度没有任何阴险或者见不得人的东西。

5.Do you sweat a lot or flush a lot?

你常出汗或是脸上常发烫吗？