no 与 not any 通常是同义的，但下面的正句与误句是为何？星期天百货商店都不开门。正：No department stores open on Sundays. 误：Not any department stores open on Sundays. 这里为什么用no是对的，但用not any却是错的呢？
第一句：Healthy care plans are needed in all big cities to prevent ______ spread of AIDS. 空内填the。
第二句：In ______ review of 44 studies, American researchers found that men and women who ate six key foods daily cut the risk of _______ heart disease by79%. 空内分别填&ldqu...
尊敬的专家：您好！
有这么一道题：
—We'd better _____ faster, or we'll be late.
—Don't worry. The transportation has _____ a lot since the government finished building the subway.
A. drive; been improved
B. to drive; improved
C. drive; improved
...
Mike is often helped by her when he is in trouble.
Mike is often helped by her when in trouble.
当主句主语和时间状语从句的主语一致时，并且时间状语从句是系表结构的时候，可以省略从句主谓部分。
我的问题是被省略之后“when+介...
be careful about 后面通常接名词，如：
Be extra careful about personal hygiene. 要非常注意个人卫生。
People should be more careful about the things they say. 人们说话时应该更加小心。
请问 be careful about 后面可接从句吗？谢谢！
对于 Thank you very much. 这是没问题的，句中的 thank 是动词，用副词 very much 来修饰动词，非常正常！但 Thanks very much. 则问题就大了。句中的 thanks 应该是名词吧？但为什么用 very much 来修饰呢？这个句应如何分析？其中的 very much ...
有人说，现在分词作条件状语时总是放在句首，不能放在句末。我查了几本语法书，所查到的例句都是放在句首的。比如：Working hard, you will succeed. 如果努力工作，你就可以成功。Adding them all up, we can find the answer. 如果把它们加...
...says the Chinese government's priority is to improve the lives of some 300 million people who are living below the poverty line by way of urbanization. 李克强总理对来自英国顶级智库的学者发表演讲时表示，中国政府城镇化道路的首要任务是提高生活在贫困线...
我们常说 I am interested in doing sth，请问这里的 am 一定要加吗？可以说I interest in doing sth.吗？interested是动词还是形容词？类似的，如 be worried about，be satisfied with等，这里一定要用 be V-ed 的形式吗？有没有 worry about，satisfy with ...