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It is all very well train operators trumpeting the improvements they are making to the network, but passengers should be able to expect a basic level of service for the substantial sums they are now paying to travel.

请问老师train operators trumpeting the improvements they are making to the network做什么成分?

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最佳答案 2021-04-29 21:01

It为形式主语,带有逻辑主语的动名词短语

【train operators】 trumpeting the improvements they are making to the network对应前面的it

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  • 学习王 提出于 2021-04-28 15:59