Chapter 1: Iron and steel


Grammar 1: The Noun
Definition: A noun is a word that names a person, place, thing, or idea
Definition: A noun is a word that names a person, place, thing, or idea Here, we take a look at singular and plural nouns, providing both singular nouns examples and plural noun examples to help you recognize plural nouns when you see them.
Abstract nouns and concrete nouns are usually defined in terms of one another. Something that is abstract exists only in the mind, while something that is concrete can be interacted with in a physical way.
✅ in English grammar, countable nouns are individual people, animals, places, things, or ideas which can be counted. Uncountable nouns are not individual objects, so they cannot be counted. Here, we’ll take a look at countable and uncountable nouns and provide both countable noun examples and uncountable noun examples. Although the concept may seem challenging, you’ll soon discover that these two different noun types are very easy to use
Chapter 2: Heat Treatment of Steel

HOW DOES HEAT TREATMENT OF STEEL WORK Starting with blacksmthing, humanity has been working with steel for so long we've dedicated entire industries to heating and shaping steel compounds to fit our needs. Today there are countless ways to heat, bend, harden, and chemically alter steel to fit whatever purpose we need it to serve.humanity has been working with steel for so long we've dedicated entire industries to heating and shaping steel compounds to fit our needs. Today there are countless ways to heat, bend, harden, and chemically alter steel to fit whatever purpose we need it to serve

Grammar 2: The Verb
A verb is a word or a combination of words that indicates action or a state of being or condition. A verb is the part of a sentence that tells us what the subject performs. Verbs are the hearts of English sentences
The simple present is a verb tense with two main uses. We use the simple present tense when an action is happening right now, or when it happens regularly (or unceasingly, which is why it’s sometimes called present indefinite).
Chapter 3: How electricity is generated


Chapter 4: What is renewable energy


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