teacher's pay remained the biggest cost,reaching 50%of total spending in 1991 and ending at 45% in2001. 其中的reaching和ending 用的是什么语法啊,为什么加动词的ing形式,谁能仔细讲解一下啊?

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teacher's pay remained the biggest cost,reaching 50%of total spending in 1991 and ending at 45% in2001. 其中的reaching和ending 用的是什么语法啊,为什么加动词的ing形式,谁能仔细讲解一下啊?
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teacher's pay remained the biggest cost,reaching 50%of total spending in 1991 and ending at 45% in2001. 其中的reaching和ending 用的是什么语法啊,为什么加动词的ing形式,谁能仔细讲解一下啊?
teacher's pay remained the biggest cost,reaching 50%of total spending in 1991 and ending at 45% in
2001.
其中的reaching和ending 用的是什么语法啊,为什么加动词的ing形式,谁能仔细讲解一下啊?

teacher's pay remained the biggest cost,reaching 50%of total spending in 1991 and ending at 45% in2001. 其中的reaching和ending 用的是什么语法啊,为什么加动词的ing形式,谁能仔细讲解一下啊?
用的语法是伴随状语,动词+ing以动名词的形式作伴随状语修饰主语,在这句话中reaching 50% of total spending的意思teacher‘s pay达到了50% of total spending,ending at 45%的意思是teacher's pay 终止在了45%.
其实这句话完全可以拆成两句话,即Teacher's pay remained the biggest cost.It reached 50%of total spending in 1991 and ended at 45% in...虽然意思是一样的,但是拆成两句话显得很罗嗦,不地道.伴随状语的使用可以使得句子更简练,是比较地道的书面表达.
希望能够对你有所帮助!

reaching是表达那件马上就要发生了
也就是future tense(将来时态)
将来时态的表达方法有以下几种:
某某will 例如:I will do my homework tomorrow. 我会做我今天的作业。
某某am/is/are going to 例如:I am going to do my homework tomorrow. She is go...

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reaching是表达那件马上就要发生了
也就是future tense(将来时态)
将来时态的表达方法有以下几种:
某某will 例如:I will do my homework tomorrow. 我会做我今天的作业。
某某am/is/are going to 例如:I am going to do my homework tomorrow. She is going to do her homework tomorrow.或者They are going to do their homework tomorrow.
某某is 做某某(就像lz的这个问题里的reaching) 例如:They are doing their homework tomorrow.
spending是名词 不是动词 意思就是花销
ending跟reaching一样

看在我打了这么多字的份上 点个赞同吧~

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在1991年老师薪酬开支占总财政支出百份之五十,在2001年降至百份之四十五。
老师们的薪酬支出由91年的高峰开始下降到2001年最低位,所以用reaching 和ending ,可能是一个十年期的调查。