... Diagnostic grammar test 诊断性语法测试 A Present continuous 现在进行时 A Present simple 一般现在时 ...
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A Present perfect continuous 现在完成进行时
These writings formed a continuous connection between my past, present, and future through events in my life.
这些作品通过我生活中的事件,将我的过去、现在和未来不断地联系在一起。
Users' demands for continuous uptime availability guaranteed in the SLA present a challenge for developers, business analysts, systems administrators, and other members of a project team.
用户要求在SLA中保证持续的正常运行时间有效性,这对开发人员、业务分析师、系统管理员和项目团队其他成员提出了挑战。
You'll notice that's its very common for a native speaker to use the present perfect continuous like this when greeting a buddy.
你会发现对于一个母语使用者,他们在问候兄弟时很喜欢用现在完成进行时。
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