老师：Hello boys and girls, nice to meet you. I'm Miss Liu from Hongguan Middle School. Welcome to this lesson. Today we are going to learn Unit 4, Life on Mars. Grammar. Boys, girls, we are on the way to explore the universe. People might move to another planet because the population on the earth is increasing rapid like. We can also say people might move to another planet because of the rapid increase in population on the earth. People might float in space because the gravity is low. We can also say people might float in space because of the low gravity.
老师：Boys, girls, look at these two sentences. People might move to another planet because the population on the earth is increasing. Rapids like people might float in space because the gravity is low.
老师：These two sentences are adverbial closes. And people might move to another planet because of the rapid increase in population on the earth. And this sentence, people might float in space because of the low gravity. They are the simple sentences with prepositional prices. Let's look at these two pictures. Food, oxygen, humans cannot survive if there is no food, water or oxygen. It means humans cannot survive without food, water or oxygen. Without. People cannot walk on Mars without special boots. We can also say people cannot walk on Mars if there is no special boots. Boys and girls, look at these two sentences. Let's read together. Humans cannot survive if there is no food, water or oxygen. People cannot walk on Mars if there is no special boots. If humans cannot survive without food, water or oxygen.
老师：People cannot walk on Mars without special book, without, the adverbial closes and simple sentences with prepositional phrases. Without. Look at Neil Armstrong. Neil Armstrong received his student pilot's license when he was sixteen. Neil Armstrong received his student pilots license at the age of sixteen. He took his first flight while he was only six. He took his first flight at the age of six. These two sentences have 1. Let's read together.
老师：Neil Armstrong received his student pilots license when he was sixteen. He took his first flight when he was only six. They can be changed into Neil Armstrong. Received his student's pilots license the age of sixteen. He took his first flight the age of six. The adverbial clauses with one and the simple sentences with prepositional phrases with the age of, who is this man? Yes, Mister Yang. Miss Dion said the mission is so hard that many astronauts failed in the tests. It means the mission is hard enough to make many astronauts fail in the tests. He practiced every day so that he could complete the mission success successfully. It means he practiced every day in order to also as to complete the mission successfully. Pay attention to these two sente
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