英文句子语法if preventative action is going to work ,you really do have to have everyone on board .怎样理解" do have to have everyone on board " 这一句?

下面的句子,在语法上有错吧If any mass products are found in defective quality,we will surely be responsible for the replacement.这句话在英文语法上用FOR 是否正确? 下面这句英文句子用了什么语法 英文语法：be动词和助动词有什么区别?一个虚拟语气句子：If there was no gravity, we should not be able to walk,该句是错的,应该写成:If there were no gravity, we should not be able to walk.还有同种情况的句子：If 帮忙检查一下的英文句子是否正确1.If I say I forgot to bring it,would you kill me?2.If I say I have forgotten to bring it,would you kill me?3.If I say I had forgotten to bring it,would you kill me?以上三个句子哪一个有语法错 #if 是什么语法 英语if语法 一句英文句子,不懂其中的语法I would be even more flattered if what he said were ture是虚拟语气吗,还有为什么有said,又有were 老师们,这句英文句子句型语法分解讲解一下谢谢!If you're talking about me behind my back that just means my life is obviously more interesting than后面漏了个you 英文句子语法if preventative action is going to work ,you really do have to have everyone on board .怎样理解 do have to have everyone on board 这一句? Write a T if the sentence is true.请帮忙分析下这个句子的语法 if you need him,I give you the key这个句子语法对么? 分析以下句子的语法if not by others,then by you yourself 这个英文句子语法对不对Love is when i see you smile to me.这个句子语法上讲对不对 问一题英文语法l____(BE)at home until 5.30 if you want to phone me. 这个英文句子语法上有错吗?I felt as if everything that annoyed me were no longer existed.as if 后面不是要虚拟吗？那如果不虚拟可以吗？可是老师之前又说as if 后面要虚拟！英语好麻烦哦~ 两个句子,请问那个句子符合英文语法?do you watch TV?do you watching TV? 英语虚拟语气的句子Wouldn't it be great if.接后面的句子.意思不定.只要语法正确 if的语法问题if领导的条件状语从句,主将从现,我想问如果是If开头的句子,哪半是主句,哪半是从句如果是If在中间的句子,哪半是主句,哪半是从句请举例说明,谢谢了