摘要： 1.当你说一段时间从过去到现在，我们用完成时态。Have you ever been to Italy?Have you ever eaten Caviar?Have you heard from George recently?I've met a lot of people in last few days.2.我们用完成时和today, this morning, this evening, etc, 当这些时间还没有在说话的时候结束。I've drunk four cups of coffee today.Have you had a holiday this year 阅读全文

摘要： past participle 过去时态The past participle often ends in -ed1. 我们用现在完成时时，这里通常都有一个和目前的联系。通常指Action过去了，但是有个现在的结果。where's my key? I've lost it.he told me his name but I've forgotten it.2. 我们通常用现在完成时，给出一个新的消息或者宣称一件近期发生的事情。I've cut my finger.The road is closed. There's been an accident.3 阅读全文

摘要： A. Study this example situation:Yesterday Karen and Jim played tennis. They began at 10 o'clock and finished at 11.30. So, at 10.30 they wereplaying tennis.They were playing = 'they were in the middle of playing'. They had not finished playing.Was/were ~ing is the past continuous:I/he/sh 阅读全文

摘要： Simply, we use it to describe what happened before right now.Very often the past simple ends in -ed (regular verbs):In questions and negatives we use did/didn't + infinitive (enjoy/see/go etc.):The past of be (am/is/are) is was/were:Note that we do not use did in negatives and questions with was 阅读全文

摘要： 并不是所有的词动可以用于 present continuous的。Some verbs (for example, know and like) are not action verbs. You cannot say 'I am knowing' or ,they are liking';you can only say 'I know', 'they like'.The following verbs are not normally used in continuous tenses:like love hate want need 阅读全文

摘要： use the continuous for something that is happening at or around the time of speaking. The action is not finished.The water is boiling, can you turn it off?Let's go our. It isn't raining now.Dn't bother me. I am busy.I am going to bed now. Goodnight!Using the continuous for temporary situ 阅读全文

摘要： we use the present simple to talk about things in general. We are not thinking only about now. We use it to say that something happens all the time or repeatedlly, or that some something is true in general. It is not important whether the action is happening at the time of speaking.I ususally go awa 阅读全文

摘要： She is driving to workA. This means: she is driving now, at the time of speaking. The action is not finished.Tom: I'm reading an interesting book at the moment. IT leand it to you when I've finished it.Catherine wants to work in Italy, so she is learning Italian.B. This means: I'm in the 阅读全文

摘要： man barricades against himself人自己妨碍着自己He who wants to do good knocks at the gate; he who loves finds the gate open.如果你真爱，一定会想到办法so==therefore, eg: The artist is the lover of Nature, therefore he is the slave and her master. 阅读全文

摘要： 很容易：1. xml来写界面2.activity的子类就是看到的view的controller3.string，图片，颜色等等自由都可以用一种诡异的方式再activity中引用到。R.id.height3.intent用来在切换activity4.在activity中用一个函数 findViewById(R.id.myTextView01)5.Eclipse 的开发环境很容易搭建6.如果手机来在开发机器上，那么很容易在的在手机上调试。7.开一个线程也很容易，就是实现一个类，overwrite它的 void run()函数。 阅读全文