Throwing food away

What's in the lesson

1. 1Warm-up
2. 2In this lesson
3. 3Guess the words (1)Vocabulary exercise
4. 4Guess the words (2)Vocabulary exercise
5. 5Check the wordsVocabulary
6. 6Check your understandingReading comprehension
7. 7Listen: the bucket experimentListening comprehension
8. 8Use the new wordsVocabulary exercise
9. 9What really happened?Grammar exercise
10. 10Looking back: should have, could have, didn't need toGrammar rule
11. 11What the family learnedGrammar exercise
12. 12Say it naturallySpeaking practice
13. 13What should they have done?Speaking practice
14. 14Let's discussDiscussion
15. 15Wrap-up

Homework

1. 1Homework: closest meaningVocabulary exercise
2. 2Homework: your sentencesVocabulary exercise
3. 3Homework: looking backGrammar exercise
4. 4Homework: your food diaryDiscussion

Words

• go to waste/ˌɡoʊ tə ˈweɪst/

  to not be used, and be thrown away

• leftovers/ˈleftoʊvərz/

  food that is not eaten during a meal and can be eaten later

• expiration date/ˌekspəˈreɪʃn deɪt/

  the date printed on food or medicine that shows when it should be used by

• edible/ˈedəbl/

  safe and good enough to eat

• spoil/spɔɪl/

  to go bad, so that it can no longer be eaten (food spoils)

• portion/ˈpɔːrʃn/

  the amount of food for one person

• compost/ˈkɑːmpoʊst/

  to put food and garden waste in a pile so that it turns into soil (also a noun)

• food bank/ˈfuːd bæŋk/

  an organization that gives free food to people who need it

• stock up on/ˌstɑːk ˈʌp ɑːn/

  to buy a lot of something so that you have enough for later

• perishable/ˈperɪʃəbl/

  going bad quickly, like milk, fish or fresh fruit

Two slides from the lesson

Warm-up

Let's talk about the food in your kitchen.

1. What was the last thing you threw away from your fridge? Why?
2. Do you plan your meals for the week, or decide every day?
3. What do you do with food that is left after a meal at home or at a restaurant?

Grammar rule

Looking back: should have, could have, didn't need to

should have / shouldn't have + past participle

A past mistake or regret: Tom should have charged his phone. (He didn't, and it died.) · We shouldn't have stayed up so late. (We did, and now we're tired.)

could have + past participle

A possibility nobody used: We could have taken the train. (It was possible, but we drove.) · With "you", it often complains: You could have called me!

didn't need to / didn't have to + verb

It wasn't necessary: I didn't need to pay for parking, because it was free on Sundays. In British English, needn't have + past participle says that you did something unnecessary: I needn't have paid for parking. American English rarely uses it.

We write should have or should've, never should of, even though it sounds the same.