Do grammar exercises to understand the grammar point.
A)Add =s, =es endings to the given verbs. Observing the rules of reading write the verbs into three columns and practice reading the final – s correctly. Use the model. Furnish,start,supply,require,drive,clean,compress,control,compose,include,consist,develop,provide, require, turn, cause, actuate, apply, forces, actuate, act, affect, govern, rotate, assist, perform, prevent, release, reach, slip, offer,occur, increase, develop, de-energize, cut, fail, go.
Model: B) Write out five sentences with the verbs -s ending from the text. How do you pronounce the final- s in the verbs? C)Complete affirmative, negative or interrogative sentences. 1 APU provides compressed air to start engines and for air conditioning.(negative) 2 Do the two main sections include an accessory assembly and a compressor and turbine assembly? (affirmative) 3 The four main systems consist of an electrical system, a fuel control system, a bleed-air system, and a lubrication system. (general question) 4 The engine develops power by compressing ambient air with a two-stage centrifugal compressor.? (alternative question) 5 The ADF isn`t a form of ‘radio compass’ ( affirmative) 6 The ADF is a form of ‘radio compass’(special question) 7 Aircraft use DME to determine their distance from a land-based transponder. (question tag) 8 ADF is one of the most important things of aircraft’s navigation systems.(general) What? (subject question) 9 The next navigation system is distance measuring equipment.(special questions) 10 Distance measuring equipment (DME) is a transponder-based radio navigation technology.(tag question) 11 DME is similar to secondary radar. (alternative question)
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