上几期学习了英语语法：短语in place of (replace)的用法、短语 more or less (about)的用法、短语more than (over)的用法、短语next to (near)的用法、短语of course (certainly)的用法
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能用一个词替换的短语的用法15. per month (monthly)每月
用法：per month通常与表示价格、工资等的名词连用，相当于monthly。
例句
：Readers will be required to pay when they have exceeded a set number of its online articles per month. (2010年12月四级)读者每个月阅读的网上文章超过了一定数量时，将需要付费。
结构分析：Readers是主语，will be required是谓语，to pay是主语补语， when引导状语从句，they是主语，have exceeded是谓语（现在完成时）， a set number of its online articles是宾语，per month是状语。
例句
：Today a similar mortgage would claim more than twice that share of his monthly earnings。(2014年12月四级)
今天类似的抵押贷款占了他每个月收入的两倍多。
结构分析：Today是时间状语，a similar mortgage是主语，would claim是谓语，more是宾语，than twice that share of his monthly earnings是比较状语。
20200628作业：1.句子结构、时态等分析；2.将英文译成中文。
短语：of necessity (necessarily)必然地，不可避免地
用法：of necessity可以用作插入语，相当于necessarily。
例句
：Combing theory with practice is of necessity.例句
：It is not necessarily true that economic growth will make our world cleaner。(2016年6月六级)
英语外刊，精读练习：1.句子结构、时态等分析；2.将英文译成中文。The International Monetary Fund said Friday it will provide Myanmar with $356.5 million in emergency funding, as the southeast Asian country battles an economic slump due to the coronavirus pandemic.【The Guardian】