as...as...的用法总结

　　Excuse me, may I have your pen?打扰了，我可以用用你的钢笔吗?

　　3.我加上表示食品、饮料等名词，意为“吃;喝”=(eat，drink)。如：

　　I have /eat an egg for breakfast.我早餐吃一个鸡蛋。

　　4.在我后面加上表示某种活动的名词，意为“举行;进行”。如：

　　The students are having a class.学生们在上课。

　　5.我还可作“邀请;招待”讲。如：

　　Thank you for having me.感谢你们邀请我。

　　6.我善交朋友，还可与其它词构成一些常见的固定搭配。如：

　　have a rest休息一会儿，have a good time过得愉快，have a look,看一看，have a talk交谈, have a meeting开会等等。

　　第三人称单数不是在词尾直接加s (haves )，而是has，have和has在否定句、疑问句中，要借助助动词do, does构成疑问句，借助don't, doesn't构成否定句。并把has还原成have。 如：　Lily has some red pencils.

　　(否定句)Lily doesn't have any red pencils.

　　(疑问句)Does Lily have any red pencils?

　　have的否定句、疑问句也可以不借助于助动词，而直接在have和has后

　　加not构成否定句或将have和has提到句首构成疑问句。不过这种变法

　　只有have和has作“有”讲时才能用，千万别变错呀!如：

　　1. I have an eraser.

　　(否定句)I haven't an eraser. (疑问句)Do you have an eraser?

　　2. We have lunch at school.

　　误：We have not lunch at school. 正：We don't have lunch at school.

　　一分钟学会：what和which用法区别

　　What vs Which

　　what和which有何不同?

　　Hello again, everyone. Tom here for BBC Learning English. Today, I'm going to explain the difference between what and which in questions.

　　大家好，我是汤姆，又见面了。今天，我们来学习疑问句中的what和which有什么不同。

　　What is used to ask a question which has a lot of possible answers.

　　what 用于表示有很多种潜在答案的疑问句中。

　　Consider the question:

　　想想这个问题：

　　What do you want to eat for lunch?

　　你中午想吃什么?

　　Here, there are no choices to limit your reply. You could choose anything you want.

　　看吧，这个问题的答案是没有限制的，你可以回答任意想吃的东西。

　　We use which when we have options to choose from.

　　which 用于选择性疑问句中。

　　So, here we have two choices- a sandwich and a melon.

　　那么我们有两个选择——一个三明治和一个甜瓜。

　　So I can say:

　　我可以说：

　　Which do you want to eat? The sandwich or the melon?

　　三明治和甜瓜，你想吃哪个?

　　Now, next time you need to ask a question, you'll know which word to use.What for anything and which when you have a choice.

　　现在，大家都知道用哪个词去问问题了吧。有多种答案用what ，选择性疑问用which 。

also，as well，too，either原来是这样用的!!

　　一、Also

　　also是用在肯定句里面，它表示的是两个人干了同样的事，或者两件事是同一个人干的，also一般是位于be动词，助动词，情态动词的后面，但在行动词的前面。比如像：

　　He has been to Beijing. I have also been there.

　　He is good at English. He is also good at Japanese.

　　不过不也有一种特殊情况，那就是在表示强调的时候，also也是可以放在be动词，助动词，情态动词的前面。比如像：

　　I can also do it.

　　I also can do it.

　　二、As well

　　这个一般在口语中用的比较多，也是用于肯定句，和too可以进行互换，通常是位于句末。比如像：

　　She not only sings,

　　She plays the piano as well.

　　三、Too

　　Too和as well的用法基本一样，它比also会更加的通俗易懂，和also，as well都可以进行相互的替换，可以放在句子的中间，也可以放在句末位置。比如像：

　　Xiao Li went to Beijing and Xiao Zhao, too, went to Beijing.

　　He studies hard and I study hard, too.

　　四、Either

　　这个与前面三个不太一样，它是用在否定句里面的，并且还只能放在句末。比如像：

　　He didn 't know it. I didn' t know it either.

　　I can't speak French and can't write it, either.

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