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27 Agustus 2014

Materi Tentang Explanation



EXPLANATION

             1. Social Function

    •   To explain the processes involved in the formation or workings of natural or sociocultural phenomena 


             2. Generic Structure
    • A general statement to position the reader.
    • A sequenced explanation of why or how something occurs
    • Closing

 
             3. Lexicogrammatical Features 

o   Focus on Generic, non human participants.
o   Use mainly of Material and Relational Processes.
o   Use mainly of Temporal and Causal Circumstances and Conjunctions.
o   Some use of Passive Voice to get theme right
o   use of non-human participants (the sea, the mountains, the computers, the engine)
o   use of action verbs (falls, rises, changes)
o   uses time relationships (first, then, following, finally)
o   use of cause/effect relationships (then, as a consequence, so, if)
o   conjunctions (when, then, first, after this so)
o   some passives (is saturated, are changed)
o   Explanations involve the stating of reasons for an activity or process. 


              4. Example

Tsunami
        Tsunamis occur when a major fault under the ocean floor suddenly slips. (General Statement
          
The displaced rock pushes water above it like a giant paddle, producing powerful water waves at the ocean surface. The ocean waves spread out from the vicinity of the earthquake source and move across the ocean until they reach the coastline, where their height increases as they reach the continental shelf, the part of the earth’s crust that slopes, or rises, from the ocean floor up to the land. Tsunamis wash ashore with often disastrous effects such as severe flooding, loss of lives due to drowning, and damage to property. (Sequence Explanation)

          A tsunami is a very large sea wave that is generated by disturbance along the ocean floor. This disturbance can be an earthquake, a landslide, or a volcanic eruption. A tsunami is undetectable far out in the ocean, but once it reaches shallow water, this fast-traveling were grows very large. (Closing)


Catatan :
Social function menerangkan proses-proses yang terjadi dalam pembentukan atau kegiatan yang terkait dengan fenomena alam, dunia ilmiah, sosial-budaya, atau lainnya yang bertujuan menjelaskan.
Closing ini bisa merupakan sebuah kesimpulan dari beberapa paragraf di atas. Ataupun menceritakan secara rinci dari sebuah topik dan rincian tersebut hanya beberapa kalimat saja.

Sumber : Diskusi Kelompok