常用的同位语从句的构成

on condition that              以...为条件

on the supposition that        以...为假设

on the ground(s) that          原因是；根据

with the exception that        除了

in spite of the fact that      尽管事实是

on the understanding that      条件是

on the assumption that         基本...的假设

例如：

He resigned on the ground(s) that his health was failing.

【译文】由于健康状况的恶化，他辞职了。

They reached a merger agreement on the understanding that both parties would be committed to expanding the market share of the company in Europe.

【译文】他们达成了合并协议，条件是双方共同致力于开拓公司在欧洲市场的份额。

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