摘要：玛丽老是在周末外出。（表示说话人对句子所描述的行为含有贬义或褒奖的语气。）
请看实例：
Mary always goes away at weekends.
玛丽每个周末都外出。（表示100%频率。）
Mary is always going away for weekends.
玛丽老是在周末外出。（表示说话人对句子所描述的行为含有贬义或褒奖的语气。）
分析：原来always与现在进行时连用并不是通常的表示100%频率，而是表示说话人对句子所描述的行为含有贬义或褒奖、惊讶等语气。
请看下列经典例句：
Costs are always rising.
费用总是不断地增加。
Some people are always coming up to perfect strangers and asking them what they do
有些人总爱和完全不认识的人搭讪，询问人家的职业。
Anna is always attacking other children, pushing them over.
安娜总是攻击其他孩子，把他们推倒。
Mike and Sue are always rowing.
迈克和休总是吵架。
You must not always be talking so much in class.
上课时你不应该总是说这么多。
Bill is always leaving his things about.
贝尔总是到处乱扔东西。
She is always saying the same thing.
她老是把同样的话说了又说。
Why are you forever forgetting people's names?
为啥你老是记不住别人的名字?
Those children are always getting into mischief.
那些孩子总是淘气。
I am always meeting new people.
我总是意外地遇见新人。
My little brothers are always fighting.
我的小弟弟们总在打架。
Bill is always working late at the office.
比尔老是在办公室工作得很晚。
The kids are always playing tricks on their teacher.
孩子们经常耍些花招戏弄老师。
She is always bemoaning her lot.
她总是怪命不好。
Some people are always complaining.
有些人老是在抱怨。
He's always complaining about his job.
他总是抱怨他的工作。
My parents are always checking up on me.
我父母总是督促我。
You're always watching television. You should do something more active.
你总是看电视，你应该做一些更积极的事。
You're always interrupting me when I'm talking!
你总是打断我的话！
The dogs are always rubbing against the wall and making dirty marks
那些狗老是往墙上蹭，留下了斑斑污迹。
I'm always having to clean up after the children.
孩子们离开以后，我总得打扫一番。
Jim is always getting into trouble with the law.
吉姆总是因惹事落到警察手里。
You're always looking for faults.
你老是在找毛病。
The newspapers are always knocking the England team.
报纸总是攻击英格兰队。
The children are always bickering about something or other.
孩子们有事没事总是在争吵。
He is always chewing gum.
他总是在嚼口香糖。
People are always talking about ‘the problem of youth’. ( New Concept English , Book 4 , L6)
人们总是在谈论“青年问题”(作者对这种谈论抱着不以为然的态度)。
You are always thinking of others.
你总是想到别人。
Dilys is always doing her homework carefully.
黛丽丝做功课历来是很细心的。
A child is always learning.
孩子总是在学习。
She is always smiling.
她总是面带笑容。
Some cities are always going to be more advantaged.
一些城市总会有一些得天独厚的优势。
过去进行时，也可以表示说话人的某种语气：
She was always moving things around.
她老是将东西搬来搬去。《柯林斯高阶英汉双解学习词典》
He was always talking on his phone during meetings.
他在开会时总是打电话。
They were always arguing about money.
他们总是为了钱而争吵。
常与进行时连用的此类副词还有forever, continually, constantly, perpetually等。
She is forever thinking of others.
她时刻关心别人。
The doctors are constantly perfecting their skills.
医生们对技术总是精益求精。
特别注意：
1.be +always +doing若主语是第一人称时,有时表达动作的偶尔性。
I am always meeting Della in the library.
近来我常在图书馆意外地遇见黛拉。
I am always doing that.
有时我总要那么干一下。
2.be+doing有时可表达某+ always“只干某事而不顾别的”种特殊情况，含之意。
Jim is always thinking of how he could improve his French.
吉姆近来一直在考虑怎样提升法语水平。
He was constantly reading Thames when he studied at Oxford University.
他上牛津大课时总是只看泰晤士报”。
来源：翅膀英语