话题 in recent years时态问题

问题 进行时态与现在分词表伴随的区别

下面两句：一句用的是进行时态，一句用的是现在分词表伴随：He was playing basketball in the playground.He was in the playground playing basketball.请问这两句有何区别？

问题 be动词有完成时态吗

For forty years Jane Goodall has been outspoken about making the rest of the world understand and respect the life of these animals.1.has been 是is 的现在完成时，那么 be动词时有完成时态的？2.about介词短语充当什么状语呢?

问题 so that前后时态要一致吗

(学校老师出的，不知道是否有误)His love for mountain climbing is so great that he kept on climbing mountains even after this experience. so that前后时态要一致吗？

问题 wish从句时态理解问题

Two men who recently spent five days on a coral island wished they had stayed there longer.请问这个句子中,为什么用完成时态的 had stayed 呢, 这样体现不出"能"的意思吧?  "希望能够呆更久",为什么不使用could stayed 呢?

问题 时态问题

what you said is true，为什么不是 what you said was true呢? 如过That was a great trip只能用过去式 那为什么现在却不这么用呢?

问题 关于句子成分和时态

...师，帮我划一下这个句子的成分，再说一下句子里用到的时态和语态，先在这里谢过了。

问题 并列句两谓语怎么确定时态

请问一下，China's approach to protecting its environment while feeding its citizens......和Confucius believed knives would remind people of killing and were too violent for use at the table连词前后时态怎么看？ 谢谢了！

问题 if条件状语从句时态的用法

If you are already planning to take time meeting with someone, add a third or fourth person to the party. 当if引导的从句是现在进行时，主句add a third......是用一般将来时态吗？

问题 Where have you been? 用什么时态来回答

Where have you been? 究竟该用什么时态来回答？

问题 时态的问题

He goes to school by bike every day for 2 years.请问这句话用一般现在时接for状语可以吗？如果不可以是为什么呢？

问题 系动词look, appear, seem可用于进行时态吗

请教各位专家，系动词look, appear, seem可用于进行时态吗？谢谢！

问题 regret saying that 后面的时态问题

从网上看到一个例句  I regret saying that I can/will not come. 这个句子 say后面的宾语从句  是不是时态有问题。应该用过去式could或者would 吗？

问题 appear和seem可用哪些时态

...吧？难道还可用于除一般现在时和一般过去时之外的其他时态？如果可以，那 appear 和 seem 都可用于哪些时态呢？

问题 句子时态正确吗？

The story starts back in 1950, when I was five .主句中的Starts用了一般现在时，正确吗？为什么？