Thì quá khứ đơn diễn tả một hành động đã xảy ra trong quá khứ và đã kết thúc trong quá khứ. Trong đó động từ ở quá khứ bao gồm 2 loại: động từ tobe và động từ thường. Động từ tobe gồm:
was: dùng cho các ngôi I She
were: dùng cho các ngôi You We
Động từ thường cũng được chia làm 2 loại: có quy tắc và bất quy tắc.
Động từ có quy tắc là các động từ có thể thêm đuôi "ed" vào sau....
Mozart was an Austrian musician and
He lived from 1756 to 1791.
He started composing at the age of live
and wrote more than 600 pieces of music.
He was only 35 years old when he died. Mozart wrote more than 600 pieces of
We saw Rose in town a few days ago.
I went to the cinema three times last week.
It was cold, so I shut the window.
Most of the tim e when we are talking about such actions,
we use the past sim ple. This is by far the m ost com m on
way about talking about the past.
I lived there for six years.
I only found out a few m om ent ago.
I asked her but she didn’t know anything.
The com pany m ade 100 people redundant
Diễn tả một tơng lai thật gần.Chẳng hạn, I am taking an oral examination tomorrow morning (Sáng mai, tôi thi vấn đáp),Are you doing anything this afternoon? (Anh có làm gì chiều nay hay không?) Diễn tả một hành động lặp đi lặp lại theo thói quen.Chẳng hạn,She is always wearing her jumper the wrong way round (Cô ta luôn mặc áo len nhầm đằng Trước ra đằng sau),You are always getting the wrong number (Các anh luôn quay nhầm số điện thoại)....
Here are some more ways we use the simple present: 1 To give instructions/directions First, you boil some water and then you add the noodles and cook them for three minutes. When you exit the MTR station, cross King’s Road and go two blocks down. 2 To make promises I promise to be very careful with your digital camera. I swear never to let you down. 3 To tell stories (for immediacy) Then she goes to the door and opens it and the monster pops out! She finishes her homework and then the phone rings....
Make the past simple, positive, negative or question:
1. I (not / drink) any beer last night. 2. She (get on) the bus in the centre of the city. 3. What time (he / get up) yesterday? 4. Where (you / get off) the train? 5. I (not / change) trains at Victoria. 6. We (wake up) very late. 7. What (he / give) his mother for Christmas? 8.
The estimation process begins by assuming or hypothesizing that the least squares linear regression
model (drawn from a sample) is valid. The formal two-variable linear regression model is based on
the following assumptions:
(1) The population regression is adequately represented by a straight line: E(Yi) = μ(Xi) = β0 + β1Xi
(2) The error terms have zero mean: E(∈i) = 0
(3) A constant variance (homoscedasticity): V(∈i) = σ2
Exercises A. Complete the sentences. Ejemplo: I didn´t watch TV last night. 1. On Saturday I (play) computer games with my cousins. 2. My mum (not cook) dinner last night. 3. I (walk) to school because there weren´t any buses. 4. They (not dance) at the party. 5. My brother (travel) to Ireland last summer.
One of Java's most striking claims is that it provides a secure programming environment. Yet despite endless discussion, few people understand precisely what Java's claims mean and how it backs up those claims. If you're a developer, network administrator or anyone else who must understand or work with Java's security mechanisms, Java Security is the in-depth exploration you need.
Your lordship can give great and convincing instances of this, whenever you please to oblige the public with
some of those large and comprehensive discoveries you have made of truths hitherto unknown, unless to some
few, from whom your lordship has been pleased not wholly to conceal them.
I was looking at Inco – a nickel-mining company – about a year ago. It had
outstanding numbers, including a low price-to-earnings ratio (P/E), big
margins, and a good cash flow. So – after doing my research into the
company’s growth strategy and management team – I recommended it to
It’s now up over 80%.
What did I know that other investors missed?
It’s pretty simple. I knew that mining companies are sometimes discounted
because their industry is so cyclical. What’s more, the price of the
commodities they extract can also be volatile.
If I were you I wouldn't ask him for advice
.*If I were you, I wouldn’t ask him for advice. Hình thức ngữ pháp: cấu trúc câu “If + (Simple Past), S + would/could/should + V(inf)” – câu điều kiện loại 2 – câu điều kiện không có thật ở hiện tại.
1. Chúng ta hãy quan sát câu sau.
This chapter introduces you to the Java language and gives you enough details to allow
you to write simple programs involving expressions, assignments, and console output.
The details about assignments and expressions are similar to that of most other highlevel
languages. Every language has its own way of handling strings and console output,
so even the experienced programmer should look at that material. Even if you are
already an experienced programmer in some language other than Java, you should read
at least the subsection entitled “A Sample Java Application Program” in Section 1.
Variants of Naive Bayes (NB) and Support Vector Machines (SVM) are often used as baseline methods for text classiﬁcation, but their performance varies greatly depending on the model variant, features used and task/ dataset.
We investigate automatic geolocation (i.e. identiﬁcation of the location, expressed as latitude/longitude coordinates) of documents. Geolocation can be an effective means of summarizing large document collections and it is an important component of geographic information retrieval. We describe several simple supervised methods for document geolocation using only the document’s raw text as evidence.
I am sure that every one of you is familiar with acne. Almost all of us got this skin disorder, right? Well, technically known as acne vulgaris, this skin disorder affects millions of people from different walks of life, annually. Studies have found out that most of the adolescents are the usual target of this disease, although infants and adults are also affected. It is even found out that about 80 percent of the teenagers develop acne, particularly for women.
- Unit 1: The present simple, the past simple, adverbs of frequency.
- Unit 2: Wh - questions, gerund and to + Infinitive.
- Unit 3: Past Perfect.
- Unit 4: The + Adjective, used to + infinitive, which as a connector
- Unit 5: Present perfect and the present Perfect passive, who, which, that.
- Unit 6: The present progressive (with future meaning), be going to.
- Unit 7: Because of and In spite of.
Simple present tense (Thì hiện tại đơn giản)
Khi nói và viết tiếng Anh còn phải quan tâm đến các thì (tense) của nó. Động từ là yếu tố chủ yếu trong câu quyết định thì của câu, tức là nó cho biết thời điểm xảy ra hành động. Simple Present Tense Simple Present là thì hiện tại đơn. Các câu và cách chia động từ TO BE chúng ta đã học trong các bài trước đều được viết ở thì hiện tại đơn. Sau đây là cách chia động từ TO WORK (làm việc) ở thì hiện tại đơn: I...
Books New interchange is officially approved textbooks for many years in the courses the American University in Cairo and is attractive to the right, simple and suitable for everyone …The books alone are not enough to master the language of course .. But you know the proper rules .. The basics of the language .. And words .. And the method of dialogue by all of this adds to the experience of the person to learn the language .. in addition of course to the practiceNew interchange is supported by 3 levels of audio files of the conversation + video...