Unit 4 - Welding and fabrication

Unit 4 - Welding and fabrication 
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Unit 4 - Welding and fabrication 

Slide 1 - Diapositive

Lesson goals
  • Learn about the past perfect simple and past perfect continuous
  • Discuss the answer to the case study assignment 
  • Learn about aircraft welding and fabrication

Slide 2 - Diapositive

Past perfect simple and past perfect continuous 

Slide 3 - Diapositive

Usage - PPS

Slide 4 - Diapositive

Form 

Slide 5 - Diapositive

Signal words

Slide 6 - Diapositive

Usage - PPC

Slide 7 - Diapositive

Slide 8 - Diapositive

Form

Slide 9 - Diapositive

The mechanic _____ the faulty component before the next flight.
A
has replaced
B
had replaced
C
was replacing
D
replaced

Slide 10 - Quiz

By the time I arrived, the mechanics ____________ (work) on the engine for three hours.
A
had been working
B
have been working
C
had worked
D
was working

Slide 11 - Quiz

The maintenance team _____ the aircraft before it was scheduled to depart.
A
were inspecting
B
had inspected
C
inspected
D
has inspected

Slide 12 - Quiz

The aircraft ____________ (undergo) regular maintenance before the incident occurred.
A
had undergone
B
was undergoing
C
underwent
D
has undergone

Slide 13 - Quiz

By the time the aircraft took off, the engineers _____ the engine.
A
repaired
B
was repairing
C
had repaired
D
have repaired

Slide 14 - Quiz

She was tired because she ____________ (work) on the avionics system all morning.
A
had worked
B
was working
C
have been working
D
had been working

Slide 15 - Quiz

The technicians ____________ (inspect) the landing gear for any faults before the flight.
A
had been inspecting
B
had inspected
C
have been inspecting
D
were inspecting

Slide 16 - Quiz

When the pilot arrived, the engineers ____________ (fix) the hydraulic system for two hours.
A
were fixing
B
had been fixing
C
have been fixing
D
had fixed

Slide 17 - Quiz