China welcomes the support of all our foreign friends, past, present or future.
无论是过去、现在还是将来，中国欢迎所有外国朋友的支持。
When talking about actions past, present or future give a SPECIFIC personal example.
当谈论到过去、现在或是将来的某种行为时，一定要给出具体的例证。
Are the stories mostly set in the past, present, or future?
大多数的故事在什么时候发生：过去、现在、还是将来？
Time clauses can refer to the past, present, or future.
时间状语从句可表示过去、现在和将来。
Time clauses can refer to the past, present, or future.
时间状语从句可表示过去、现在和将来。
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