Joy English · Level B2 · Biologyjoy-english.com
How vaccines work
Name:Date:
Follow a scientific process explained in a lecture.
Listen to each sentence and write what you hear.
Audio and answer checking: https://joy-english.com/listening-lessons/how-vaccines-work
Words to know
- vaccine
- A substance that helps protect the body from a disease.
- germ
- A very small living thing that causes illness.
- antibody
- A substance the body makes to fight germs.
Answer key
- A vaccine trains the immune system to identify a harmful germ.The stress in “identify” is on “den”.
- It usually contains a weakened form or a harmless part of the germ.The -ed of “weakened” is a d sound.
- The body responds by producing antibodies.The stress in “antibodies” is on “an”.
- If the real germ appears later, the body can fight it quickly.“Fight it” links: “figh-tit”.
- This is why many vaccines protect people for years.The stress in “protect” is on “tect”.