2.　Since when am I supposed to believe this.　我什么时候会相信这个呢。

1.　Will you please send me three copies.　麻烦你给我三份。(不要看到Will you...就在句尾加问号喔)

2.　Turn in your papers, please. -------------------------------------------------- 3.1.3　用在礼貌的、祈使性的、以及间接疑问句(Interrogative sentence)尾，表示 句子结束：

1.　Close the door.

2. Ailan and Xiaodong are my friends. ------------------------------------------------- 3.1.2　 用在祈使句(Imperative sentence)尾，表示句子结束：

1. I am leaving now.

3.1.1　用在陈述句(Declarative sentence)尾，表示句子结束：

　句号的写法，在英文里是个小黑点(.)，可在中文却是个小圈儿(。)(在科学技术文章里 也可用“小黑点”)。用法也有些差异，在英文方面，最“好玩”的是用在缩写方面：

* 句号用在陈述句、祈使句及礼貌问句等的句尾 * 句号用在缩写方面 * 句号用在数目字方面

3.1　句号用在陈述句、祈使句及礼貌问句等的句尾：

2.　George was the hard worker, John, the lazy one.　(John, the lazy one 原 本应该是 John was the lazy one) ===========================================================

终于搞定。你说英文逗号容易用，还是中文逗号容易用？

1.　The lion is the symbol of courage; the lamb, of meekness. (the lamb, of meekness 原本应该是 the lamb is the symbol of meekness)