what you're talking about may be棋盘局势.

Like what you said,阿is totally different from啊,and will never appear to show your feelings,and 阿will be used ONLY with certain characters to form new words like 阿宝，阿爸etc.

First,what you are talking about is "啊“but not"阿”.And they pronounces similarly. Second,the character啊can be used either at the begin or the end.like"啊我看到了,小姐你白痴啊"they are all right. Remember,this character啊 DOES NOT have any other meanings.it just functions as an interjection(usually put at the begin)，or Auxiliary verb(usually put at the end) first,It can describe your feelings.for example,when people are shocked,or amazed,you may hear them say啊,and here it is interjection.second,it is usually put at the end ,not for showing your strong feeling as above,but just as part of a spoken sentence.and here it is Aux. verb.

A flow conversation means it goes without stopping like continuous stream,if we say"words flow from his month"we say"他滔滔不绝。"And if you ruin the flow,you are interrupting him from talking.then we could say things like"谈话被打断了。”

大家好！！

我很感谢你们在看这里。 嗯，好久没在Lang8写东西了。

今天我非常开心。早上我跟两个姐姐一起做早饭，然后我和家人出去买一些衣服。其实，我买了一条裤子和一件白衬衫，我挺喜欢它们 *-*。我两个姐姐和我妈妈买了很多外套，还买了许多毛衣。因为现在在秘鲁是冬天，所以天气很冷，这就是她们买了这些衣服的原因。对了！我们买了一套衣服给我的外甥。他真可爱吧！！ 然后，我们去饭店吃晚饭。明天或者后天我要出去买两件衬衫因为今天我找不到我喜欢的衬衫。

谢谢大家！下次见 :)

I have will to=我必须去做... 我明天必须去上学。 爸爸回家后我必须去遛狗。

1.系统备份（让你的计算机恢复到原先某个状态） 2.格式化（清除所有数据） 3.碎片整理（将硬盘中的数据进行整理，使其运行更加快速）