话题 look sb in the eye

话题 pursue control in conversion mode

话题 have difficulty in doing sth

话题 have difficulties in doing sth

话题 wrinkled in an apologetic smile

话题 play about in the way

话题 be slow in being done

话题 the window in my car

话题 be a study in sth

文章 掌握发音规则和构词法是记住单词的两个必要条件

...oat, snow/aʊ/ cow, house/ɪə/ beer, hear, here /eə/ chair, share, pear, there/ʊə/ sure, poor, tour 秘诀：除r音节外，字母组合音一般发第一个元音的名称音（如ee, ea, ai, ay, oa, ow等）。例词：/p/ pipe  /t/ tea, night, doubt/k/ music, kind, cock, chemist/f/ five, e...

问题 表示瀑布（如Lower Falls）的专有名词作主语时的主谓一致

...有名词前使用定冠词的规律”：https://www.cpsenglish.com/question/62425From a classic viewpoint, enjoy Lower Falls, the Yellowstone River, and the breathtaking colors of the canyon (峡谷) while learning about the area’s natural and human history. Discover why artists and photographer...

问题 rush hour前面用介词in与at的区别

有时看到在 rush hour 前面用介词 in，有时看到在 rush hour 前面用介词 at，两者有什么区别吗？

问题 happen to / with / in 有什么差别

如果对物， what happened _______ your leg ?  除了to,可以用with 或 in吗？如果对人，what happened  _______ you ? 用to 和 with 有什么差别吗？

问题 join in the trip还是join the trip

join in the trip还是join the trip，还是两者都可以?

问题 in seeing...和 to see...辨析

Many thanks for your kindness in seeing me off at the airport.这是书上原句。我想可否说成：Many thanks for your kindness to see me off at the airport.如果可以，这2句含义理解上究竟有什么区别？