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B2 Grammar • Expedition Log ⏱️ 12 MINS

Past Perfect & Continuous on the Mountain

Master past time order and duration using authentic alpine expedition stories.

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How to Use This Lesson

For Teachers

• Allocate 4 minutes to review the 4-row rule table with students.
• Use the 12 staged tasks as an independent check or rapid exit ticket.

For Students

• Study the 4 grammar rules and model sentences before answering.
• Check single-word hints in brackets if you get stuck on verb forms.

A breathtaking snowy mountain peak under a clear sky, realistic style, no text

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Mountain summit expedition scene

Climbers setting up a tent on a rocky mountain ledge, atmospheric lighting, realistic style, no text

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Climbers setting up a camp

⛰️ Alpine Grammar Rules

Core Reference

Grammar Rule	Expedition Example
Rule 1 Past perfect (had + past participle) shows an action that happened before another past action.	"By the time we reached the summit, the weather had changed."
Rule 2 Past perfect continuous (had been + -ing) shows how long something went on before a past moment.	"We had been climbing for ten hours when the avalanche started."
Rule 3 before, after, when and by the time show the order of the two past actions.	"After the guide had checked the equipment, we left the camp."
Rule 4 had never / had not + past participle says that something had not happened before that moment.	"Before that day, she had never climbed a mountain."

Checkpoint Tasks (1–12)

12 Questions

STATION 1

Choose the Correct Sentence

1. Which sentence correctly describes the climber's headache?

[altitude]

____ a. When Liam got a headache, he already reached high altitude. ____ b. When Liam got a headache, he had already reached high altitude. ____ c. Liam had got a headache when he reached already high altitude.

2. Which sentence correctly emphasizes continuous effort before collapse?

[exhausted]

____ a. Clara was exhausted because she had carrying the heavy pack for five hours. ____ b. Clara was exhausted because she has been carrying the pack for five hours. ____ c. Clara was exhausted because she had been carrying the heavy pack for five hours.

3. The climbers finished crossing the rocky terrain at five o'clock. Darkness set in at six. Which sentence is correct?

[terrain]

____ a. They had crossed the rocky terrain before darkness set in. ____ b. They crossed the rocky terrain after darkness had set in. ____ c. Before they had crossed the rocky terrain, darkness set in.

STATION 2

Sentence Combining (Using "by the time")

Instruction: Combine the two actions into one sentence using "By the time". Remember: the event in the "by the time" clause uses Past Simple, and the earlier completed event uses Past Perfect.

4. Combine these two actions:

[summit]

Action 1: The expedition team reached the summit.
Action 2: Heavy snow started falling. (happened later)

Type the full combined sentence starting with "By the time":

____

5. Combine these two actions:

[cautious]

Action 1: Our cautious guide checked every harness.
Action 2: The group stepped onto the ice bridge. (happened later)

Type the full combined sentence starting with "By the time":

____

6. Combine these two actions:

[rescue]

Action 1: The injured climbers built a snow shelter.
Action 2: The rescue helicopter arrived. (happened later)

Type the full combined sentence starting with "By the time":

____

STATION 3

Fill in the Gaps

Instruction: Type the correct form of the verb in brackets (Past Perfect or Past Perfect Continuous).

7. Complete the sentence showing continuous duration:

[thrill]

The climbers ____ (trek) for six hours before they felt the ultimate thrill of the ridge.

8. Complete the sentence describing a first-time experience:

[determination]

Before joining the Arctic expedition, Elena ____ (never / test) her true determination in sub-zero weather.

9. Complete the sentence showing an earlier completed event:

[avalanche]

The safety team noted that two minor snowdrifts ____ (shift) along the slope before the massive avalanche broke loose.

STATION 4

Error Correction (Base Camp Messages)

Instruction: Read each text message sent from the mountain. Identify the incorrect verb phrase and type ONLY the corrected verb form in the box.

10. Correct the text message:

[exhausted]

📱 Message from Mateo:

"Hey Leo! Finally at Camp 2. By the time we pitched the tent, we were climbing for eight hours. I am completely exhausted!"

Correct form of 'were climbing': ____

11. Correct the text message:

[cautious]

📱 Message from Nina:

"Hi Dan! Our cautious guide decided to halt the climb at midnight because the wind increased steadily since nine o'clock."

Correct form of 'increased steadily': ____

12. Correct the text message:

[rescue]

📱 Message from Sam:

"Safe at last! When the rescue crew arrived, we already waited in the cave for four hours."

Correct form of 'already waited': ____

Past Perfect and Past Perfect Continuous

Past Perfect & Continuous on the Mountain

How to Use This Lesson

⛰️ Alpine Grammar Rules

Checkpoint Tasks (1–12)

Choose the Correct Sentence

Sentence Combining (Using "by the time")

Fill in the Gaps

Error Correction (Base Camp Messages)

Related lessons

Passive Voice and Causative

Reported Speech and Reporting Verbs

Relative Clauses: Defining and Non-defining

Correlative Conjunctions: Both ... And, Either ... Or, Neither ... Nor

Purpose Clauses: In Order To, So As To, So That

Compound Adjectives and -ing / -ed Adjectives