【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(dǎo)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(dǎo)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?/p>
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(dǎo)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(dāng)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。
