正確的語法可以簡化信息，簡單的一句話就能傳達很多信息，甚至包含多重意思，就像雙關(guān)語一樣。語法正確還能避免歧義，明確指代關(guān)系和修飾對象等，是很有用的，學進去了就明白了。以下是整理的相關(guān)資料，希望對您有所幫助！
【篇一】
肯定句：動詞原型
Come here, please.
Go downstairs, please.
Stand up.
Sit down.
Be quiet.
Be careful.
祈使句中如果有喚語，一定要用逗號隔開，放在句首或者句尾：
Come in, Amy.
Sit down here, Tom.
Mary, give me a book please.
★否定：Don't+動詞原型
Don't come here.
Don't sit down.
Don't stand up.
Don't give me it.
let sb. do 讓某人做
Let me pass.
Let us have a rest.
Let's have a rest.
反意疑問：
Let's have a walk along the river, shall we?
Let us go out for a drink, will you?
【篇二】
英語名詞復(fù)數(shù)規(guī)則
1.一般情況下，直接加-s，如：book-books， bag-bags， cat-cats， bed-beds
2.以s。 x。 sh。 ch結(jié)尾，加-es，如：bus-buses， box-boxes， brush-brushes， watch-watches
3.以“輔音字母 y”結(jié)尾，變y為i， 再加-es，如：family-families， strawberry-strawberries
4.以“f或fe”結(jié)尾，變f或fe為v， 再加-es，如：knife-knives 〕
Leaf--leaves
5.不規(guī)則名詞復(fù)數(shù)：
man-men， woman-women， policeman-policemen， policewoman-policewomen，
child-children
foot-feet，。tooth-teeth
fish-fish， people-people， Chinese-Chinese， Japanese-Japanese
【篇三】
引導條件狀語從句的從屬連詞
主要的有if, unless, as [so] long as等：
You can leave now if you like. 如果你愿意現(xiàn)在就可以走了。
As long as it doesn’t rain we can go. 只要不下雨，我們就可以去。
【注】除以上基本的引導條件狀語從句的從屬連詞外，還有的動詞尤其是其分詞形式(如suppose, supposing, provided, providing等)和介詞短語(如in case, on condition that等)也可用作連詞表示條件：
In case I forget, please remind me about it. 萬一我忘記，請?zhí)嵝盐乙幌隆?BR> I will come on condition (that) she is invited too. 如果邀請她來, 那我就來。
He may go with us provided [providing] he arrives in time. 他若及時到，就可以和我們一起走。
Suppose 和supposing 引導條件狀語從句時，通常用于主句為疑問句的場合：
Suppose the boss saw you，what would he say? 如果老板看到你，他會怎樣說?
Supposing he does not come, shall we go without him? 他若不來，是不是不帶他去?
條件狀語從句的時態(tài)
當主句為將來時態(tài)或具有將來意時，條件狀語從句通常要用一般現(xiàn)在時表示將來意義，而不能直接使用將來時態(tài)：
I’ll stay at home if it rains tomorrow. 要是明天下雨，我就呆在家里。
【注】有時也可見到 if you will 這樣的說法，但那不是將來時態(tài)，而是表示意愿或委婉的請求(此處的 will是情態(tài)動詞)：
If you will wait for a moment, I’ll go and tell the manager that you are here. 請等一下，我去告訴經(jīng)理說你來了。
【篇一】
肯定句：動詞原型
Come here, please.
Go downstairs, please.
Stand up.
Sit down.
Be quiet.
Be careful.
祈使句中如果有喚語，一定要用逗號隔開，放在句首或者句尾：
Come in, Amy.
Sit down here, Tom.
Mary, give me a book please.
★否定：Don't+動詞原型
Don't come here.
Don't sit down.
Don't stand up.
Don't give me it.
let sb. do 讓某人做
Let me pass.
Let us have a rest.
Let's have a rest.
反意疑問：
Let's have a walk along the river, shall we?
Let us go out for a drink, will you?
【篇二】
英語名詞復(fù)數(shù)規(guī)則
1.一般情況下，直接加-s，如：book-books， bag-bags， cat-cats， bed-beds
2.以s。 x。 sh。 ch結(jié)尾，加-es，如：bus-buses， box-boxes， brush-brushes， watch-watches
3.以“輔音字母 y”結(jié)尾，變y為i， 再加-es，如：family-families， strawberry-strawberries
4.以“f或fe”結(jié)尾，變f或fe為v， 再加-es，如：knife-knives 〕
Leaf--leaves
5.不規(guī)則名詞復(fù)數(shù)：
man-men， woman-women， policeman-policemen， policewoman-policewomen，
child-children
foot-feet，。tooth-teeth
fish-fish， people-people， Chinese-Chinese， Japanese-Japanese
【篇三】
引導條件狀語從句的從屬連詞
主要的有if, unless, as [so] long as等：
You can leave now if you like. 如果你愿意現(xiàn)在就可以走了。
As long as it doesn’t rain we can go. 只要不下雨，我們就可以去。
【注】除以上基本的引導條件狀語從句的從屬連詞外，還有的動詞尤其是其分詞形式(如suppose, supposing, provided, providing等)和介詞短語(如in case, on condition that等)也可用作連詞表示條件：
In case I forget, please remind me about it. 萬一我忘記，請?zhí)嵝盐乙幌隆?BR> I will come on condition (that) she is invited too. 如果邀請她來, 那我就來。
He may go with us provided [providing] he arrives in time. 他若及時到，就可以和我們一起走。
Suppose 和supposing 引導條件狀語從句時，通常用于主句為疑問句的場合：
Suppose the boss saw you，what would he say? 如果老板看到你，他會怎樣說?
Supposing he does not come, shall we go without him? 他若不來，是不是不帶他去?
條件狀語從句的時態(tài)
當主句為將來時態(tài)或具有將來意時，條件狀語從句通常要用一般現(xiàn)在時表示將來意義，而不能直接使用將來時態(tài)：
I’ll stay at home if it rains tomorrow. 要是明天下雨，我就呆在家里。
【注】有時也可見到 if you will 這樣的說法，但那不是將來時態(tài)，而是表示意愿或委婉的請求(此處的 will是情態(tài)動詞)：
If you will wait for a moment, I’ll go and tell the manager that you are here. 請等一下，我去告訴經(jīng)理說你來了。