why don’t和why not的区别如下:句子结构不同:why don’t:后接主语和动词,即“why don’t + 主语 + 动词”。why not:直接跟动词,动词前不能有其他成分,即“why not + 动词”。时态变化不同:why don’t:结构可以有时态的变化,如过去时“why didn’t”,...
中文含义不同:why don’t:意为“为什么不呢”,有时带有惋惜或责怪别人没有做某件事的意思。why not:意为“为什么不好、不行”,通常用来表达一种建议。句子结构不同:why don’t:后面需要跟主语和动词,形成完整的句子结构,如“Why don’t you go out for a walk?”。wh...
Why Can't I Fly? 作者:Sharon Cornwell ISBN:9780431061542 豆瓣评分 目前无人评价 评价: 写笔记 写书评 加入购书单 分享到 推荐
I'd really like to know why a query using hard coded device_ids can use the index, but using a subquery doesn't: E.g. Hardcoding uses the index: DELETE FROM device_data WHERE device_id in (1,2,3...1000) AND timestamp <= CURDATE() - INTERVAL 1 YEAR LIMIT 10000; ...
1、两个句子结构不同:why don't + 主语 + 动词;why not一定要直接跟版动词,动词前不能有其他成分。2、why don't 结构可以有时态的变化,比如变为过去时why didn't,完成式why haven't等;why not没有时态变化。3、why not可以独立成句,而why don't不可以。最后总结,通过以上关于why ...
@英语知识问答why not和why don't的区别 英语知识问答 “why not”和“why don't”在英语中都是常见的表达,但它们在语法结构和常用语境上有所不同。 语法结构: “why not”后面通常直接跟动词原形,表示建议或询问原因。例如:“Why not go for a walk?”(为什么不去散步呢?) “why don't”后面则...
简介:您正在观看的是初中英语教学视频课例视频【 11.人教版八年级英语下册阅读课 Unit4 Why don't you talk to your parents第二课时优质课教学视频+PPT课件.mp4 】。11.人教版八年级英语下册阅读课 Unit4 Why don't you talk to your parents第二课时优质课教学视频+PPT课件.mp4,如果您觉得该视频很...
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why can't I login as rootPosted by: Tricia Hinman Date: April 24, 2009 08:11AM I created a password for the root user when installing on win server 2003 but it doesn't work. So how do I recreate the root user without using the installers app? I've tried several times to ...
Why can't script create a user?Posted by: Mike Dodd Date: May 21, 2009 09:39AM I have these three statements in a script I want to run in Query Browser: REVOKE ALL ON my_db.* FROM 'mydbuser'@'%'; GRANT SELECT, INSERT, UPDATE, DELETE ON my_db.* TO 'mydbuser'@'%' ...