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”，完成式“why haven’t”等。why not：没有时态变化，始终保持原形。成句独立性不同：why not：可以独立成句...
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 not:这个短语本身没有时态变化,它总是以现在时态的形式出现,即使讨论的是过去或未来的情况。 Why don't:这个短语可以根据需要变化时态。例如,过去时态可以是“Why didn't you try it?”(你过去为什么没试?)完成时态可以是“Why haven't you tried it yet?”(你为什么还没试过?) 用法 用于建议:两者都...
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 ...
1、Why don't you turn to the reference book?2、Why not turn to the reference book?但是，why don't和why not两个句式在实际使用时还有如下几个区别：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...
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CST EMS time domain -- How to use? Why don't I get fields out of it? 录入:edatop.com 点击:Hi, I've been modeling a Aluminum conductor with a pulsed current through it, due to the "pulsed" fact, I couldn't use the Stable current solver because it won't give the ...
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I am using MySQL 3.23.56 I've been searching for ages for the solution but cannot find anything, any pointers would be gratefully received. Thanks in advance Chris Subject Written By Posted Why won't my table index for fulltext? Chris Green ...
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; ...