Giải đề và bài mẫu IELTS Writing Task 1 “Lạ – Khó” | Phần 7

Đề bài IELTS Writing Task 1 – 07

The diagram show how an LED (light emitting diode) flashlight works.

Summerise the information by selecting and reporting the main features, and make comparisons where relevant.

Dàn bài

Bài mẫu

The picture illustrates the design of an LED (light emitting diode) flashlight and how it works. 

Overall, it is clear that there are five key components of the flashlight, with the batteries being the power source, and a slide switch to turn the flashlight on and off.

The LED flashlight consists of a plastic casing which houses many different parts; a light bulb, batteries, and metal wiring which runs throughout the flashlight. Another important part is the slide switch which has the function of controlling the power to the light bulb.

When the switch of the flashlight is pushed into the on position, it closes the metal switch contacts and completes the circuit, which activates a flow of electricity powered by the batteries, which turns the flashlight on. The circuit is broken when the switch is moved to the off position where the two contacts are separated, which results in the flashlight being turned off.

(161 words)

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Các cấu trúc dùng để diễn tả cấu tạo và nguyên lý hoạt động

• the design of

• how it is operated

• there are five key parts of

• Another important part is

• has the function of

• is pushed into the on position

• a flow of electricity

• activates a flow of electricity

• is moved to the off position

• which results in