Lego|Grammar|Pre-Int|6. Articles (general rules)
Read the text quickly and solve the code below
In the past people often used codes when they wanted to send a secret message. It was safe because you could read the message correctly only if you knew the code.
But codes are not just something used by Julius Caesar or Mata Hari (she was a famous spy). Today we use codes several times a day — for example, when you pay for something by credit card or send an email to your friends. Nowadays codes protect information.
Before computers, the biggest users of codes were governments, who used them in wars.
Julius Caesar used a simple system to communicate with his army. Instead of writing A, he would write D (+3 letters). What a great code he invented! He sent messages to his soldiers: as they knew the code, they could easily understand what the emperor wanted to say.
Computer security systems today are not so different. But modern keys are much bigger, and there are billions of possibilities for each letter or number.
Here is the key to Caesar’s code
|Code letters||Message letters|
As you have probably guessed, today we are going to speak about articles and this text will help us.
Look at the words in bold in the text and underline the articles before them or cross the space if there is no article
Use 🔗Page Marker
As you probably remember, the choice of articles often depends on context, so let’s look at the text once again and try to discover some rules.
Match the sentences from the text with the rules
Use 🔗Page Marker
|1. Today we use codes several times a day.||with superlatives like the biggest, the most dangerous|
|2. What a great code he invented!||when it is clear which thing or person you mean|
|3. She was a famous spy.||in expressions like once a day, three days a week, etc.|
|4. Caesar used a simple system to communicate with his army.||when you say what somebody’s job is|
|5. The biggest users of codes were governments.||in exclamations What a …!|
|6. They knew the code.||when you mention a thing or person for the first time|
|7. They could easily understand what the emperor wanted to say.||when you talk about something you have already mentioned|
Read and remember the rules
Read the sentences and answer the questions
Complete the text with the correct article
in code is a set phrase used without any article.
Fill in the gaps with the correct article. If no article is needed, put a dash (-)
Now let’s discuss the topic you like. You may choose a film or code given in green buttons, or the one you know. Use the questions as prompts. It’s not necessary to answer all of them.
Choose the topic and speak about it
Choose the correct article a/an, the or «—» (if no article is needed)
Complete the sentences with the correct article a/an, the or «-/—» (if no article is needed)
Урок Homework Курс
- History of codes
- Famous mysteries
- In code
- Being a spy
- James Bond
Урок не принадлежит курсу