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Basic 3 (A2)Unit 9: Saving EnergyLesson 6: Renewable EnergyA2
Avatar

Hi! So you just watched the lecture about renewable energy. Can you tell me — why is renewable energy important?

Student

Yes, um, renewable energy is important because... fossil fuels is bad for the environment. When we burn fossil fuels, it produce a lot of pollution.

Avatar

Good point! Fossil fuels are bad for the environment — you're absolutely right. And they produce pollution. So what happens when fossil fuels run out?

Student

The fossil fuels will finish one day. They are not natural... I mean, they will run out because the earth cannot make more. So we need energy that can come again, like wind and solar energy.

Avatar

Exactly! Fossil fuels will run out, and we need renewable sources. Let's talk about wind energy first. What are the advantages of wind energy?

Student

Wind energy is good because the wind is free and it not make pollution. Wind turbines can produce electricity without burning fuel. And wind energy is more cleaner than fossil fuels.

Avatar

Right, wind doesn't make pollution and it is cleaner than fossil fuels. Great use of comparisons! But are there any disadvantages?

Student

Yes, um, the wind don't blow every day, so sometimes there is not enough energy. And the turbines are very big and some people think they are ugly. Also, they can be dangerous for birds that fly near them.

Avatar

Those are good points! The wind doesn't blow every day — that's a real challenge. You also mentioned the danger to birds — great thinking! Now, what about solar energy? What are its advantages?

Student

Solar energy come from the sun, so it is free too. Solar panels can be builded on houses and buildings. The sun is the most powerful source of energy. I think solar is better than wind because the sun is more reliable.

Avatar

Solar energy comes from the sun — yes! And solar panels can be built on buildings. I like your comparison that the sun is more reliable. Are there any disadvantages of solar energy?

Student

Solar panels is expensive to buy, and they need a lot of space. Also, when is cloudy or nighttime, the panels cannot produce electricity. But in the future, technology will make solar panels cheaper and better.

Avatar

Solar panels are expensive now, that's true. And when it is cloudy, they can't produce as much. But you're right that technology will help in the future. You did a great job summarizing everything!

Student

Thank you! I think renewable energy is really important for the future. We need to protect the environment and reduce pollution.

3:00Student 60%Avatar 40%7 utterances3 fillers
25 signals|12 phenomena|
A1: 18A2: 16B1: 1B2: 1
Verb Tenses & Aspect
12
GRAM-A2-073A2

Subject-verb agreement with plural subjects — plural nouns require plural verb forms

“fossil fuels is bad for the environment”Turn 2
fossil fuels isfossil fuels are
Substitution

Plural subject 'fossil fuels' requires 'are', not 'is'.

Avatar correction:“Fossil fuels are bad for the environment”
95%
GRAM-A2-098A2

TO DESCRIBE EVENTS/HABITS/GENERAL TRUTHS — Affirmative form of lexical verbs to talk about repeated events or habits, and general facts

“it produce a lot of pollution”Turn 2
it produceit produces
Omission

Third-person singular requires '-s' suffix: 'produce' → 'produces'.

Avatar correction:“And they produce pollution”
93%
GRAM-A2-099A2

Negative form of Present Simple — use of auxiliary DO/DOES + NOT for negation

“it not make pollution”Turn 6
it not makeit doesn't make
Omission

Negation requires auxiliary 'doesn't' before the base verb.

Avatar correction:“wind doesn't make pollution”
94%
GRAM-A2-099A2

Negative form of Present Simple — use of auxiliary DO/DOES + NOT for negation

“the wind don't blow every day”Turn 8
don'tdoesn't
Substitution

Third-person singular 'the wind' requires 'doesn't', not 'don't'.

Avatar correction:“The wind doesn't blow every day”
94%
GRAM-A2-098A2

TO DESCRIBE EVENTS/HABITS/GENERAL TRUTHS — Affirmative form of lexical verbs to talk about repeated events or habits, and general facts

“Solar energy come from the sun”Turn 10
comecomes
Omission

Third-person singular 'Solar energy' requires 'comes'.

Avatar correction:“Solar energy comes from the sun”
93%
GRAM-A2-144A2

Passive voice — irregular past participle forms in passive constructions

“Solar panels can be builded on houses”Turn 10
can be buildedcan be built
Substitution

'Build' has an irregular past participle 'built', not 'builded'.

Avatar correction:“solar panels can be built on buildings”
92%
GRAM-A2-073A2

Subject-verb agreement with plural subjects — plural nouns require plural verb forms

“Solar panels is expensive to buy”Turn 12
Solar panels isSolar panels are
Substitution

Plural subject 'Solar panels' requires 'are', not 'is'.

Avatar correction:“Solar panels are expensive now”
95%
GRAM-A2-073A2

Subject-verb agreement — pronoun subject omission in subordinate clauses

“when is cloudy or nighttime”Turn 12
when is cloudywhen it is cloudy
Omission

Missing subject pronoun 'it' in the subordinate clause.

Avatar correction:“when it is cloudy”
90%
GRAM-A2-126A2

WILL for future predictions — using "will" to make predictions about the future

“they will run out”Turn 4
92%
GRAM-A2-098A2

Gerund after preposition — using the -ing form after prepositions like "without"

“without burning fuel”Turn 6
87%
GRAM-A2-123A2

WILL for future predictions — using "will" + verb for future predictions

“technology will make solar panels cheaper and better”Turn 12
92%
GRAM-A2-098A2

TO DESCRIBE EVENTS/HABITS/GENERAL TRUTHS — Affirmative form of lexical verbs to talk about repeated events or habits, and general facts

“renewable energy is really important for the future”Turn 14
91%
Adjectives & Adverbs
4
GRAM-A2-177A2

Comparative adjectives — one-syllable adjectives use -er suffix, not "more" + adjective

“wind energy is more cleaner than fossil fuels”Turn 6
more cleanercleaner
Addition

'Cleaner' is already comparative. Adding 'more' creates a double comparative.

Avatar correction:“it is cleaner than fossil fuels”
96%
GRAM-A2-183A2

Superlative adjectives — using "the most" + adjective for superlative forms

“The sun is the most powerful source”Turn 10
93%
GRAM-A2-177A2

Comparative adjectives — using "better than" for irregular comparatives

“solar is better than wind”Turn 10
91%
GRAM-A2-180A2

Comparative adjectives — using "more" + adjective for multi-syllable comparatives

“the sun is more reliable”Turn 10
90%
Clause Linking & Subordination
2
GRAM-A2-083A2

BECAUSE clauses — linking a reason to a main clause using "because"

“renewable energy is important because... fossil fuels is bad for the environment”Turn 2
91%
GRAM-A2-081A2

WHEN clauses — subordinate time clauses with "when"

“When we burn fossil fuels”Turn 2
89%
Modality
2
GRAM-A2-150A2

CAN/CANNOT for ability and possibility

“the earth cannot make more”Turn 4
90%
GRAM-A2-150A2

CAN/CANNOT for ability and possibility

“Wind turbines can produce electricity”Turn 6
91%
Relative Clauses
2
GRAM-A2-084A2

Relative clauses with THAT — defining relative clauses using "that"

“energy that can come again”Turn 4
88%
GRAM-A2-084A2

Relative clauses with THAT — defining relative clauses using "that"

“birds that fly near them”Turn 8
88%
Nouns & Determiners
1
GRAM-A2-097A2

THERE IS / THERE ARE for existence — expressing existence or non-existence

“there is not enough energy”Turn 8
90%
Coordination
2
GRAM-A2-080A2

Coordination with AND — joining clauses or phrases with "and"

“the turbines are very big and some people think they are ugly”Turn 8
89%
GRAM-A2-080A2

Coordination with AND — joining verb phrases with "and"

“We need to protect the environment and reduce pollution”Turn 14
89%