问题 let alone 与 letting alone

I hardly had time to think these days, let alone relax.为什么不能用letting alone作伴随状语?

问题 现在完成时与一般过去时区别

为什么不能说 I went to Shanghai three times? 而要用现在完成时?谢谢!

问题 所有格作定语和名词以及同根形容词作定语的区别

educational developmenteducation developmentthe development of education教育发展。请问这三者的区别？谢谢!

问题 请问以has做谓语怎么倒装

各位老师好原句Cheating has nothing good to you.如果用not only进行引导，原句应该如何倒装

话题 this is the first time

话题 it was the first time

话题 000 times per 24-hour period

话题 go away for some time

话题 This was my first time

话题 take your time to do

话题 take your time in doing

话题 It’s the first time…

话题 this being the first time

话题 ahead of one's time

话题 It is the first time