Have you ever participated at a science fair? If so, how was your experience?
for example, 'I remember having participated at one when I was in high school with a chemistry experiment, but I only did it to pass the subject.
It is thought that
the history of microwave dates back to World War II, where radar technology
played a pivotal role. However, it will be shown another version in this
article.
It is believed that
Percy Spencer, an engineer at Raytheon, stumbled upon the concept of microwave
heating by chance. While working on radar equipment, it is often said that he
noticed a candy bar in his pocket had melted due to microwaves emitted by the
radar equipment. This serendipitous discovery led to the development of the
first microwave oven, the Radarange, in 1945.
Throughout the 1950s
and 1960s, efforts were made to refine microwave technology for domestic use.
It was hoped that these advancements would bring about a revolution in home
cooking.
In 1967, Amana
Corporation introduced the first countertop microwave oven, which quickly
gained popularity for its speed and convenience. Since then, microwaves have
become an indispensable appliance in households worldwide, making meal
preparation faster and more efficient.
it + be + past participle + (that) + subject + verb:
It is estimated that millions of people visit the site every year.
It is believed that the walls date from the third century BCE.
It is reported that mosquitoes transmit the disease.
Individual Online Exercise about the Impersonal Passive
https://www.liveworksheets.com/es/w/en/english-second-language-esl/2124991
Oral Practice about the Impersonal Passive on Wordwall
https://wordwall.net/es/resource/70662801
What is said about Bill Gates?
Bill Gates is said to have a big fortune.
Bill Gates is said to...
Someone is said to...
Someone is known to...
Someone is believed to...
Individual Exercise about the Personal Passive
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-120780.php
https://www.liveworksheets.com/w/en/english-second-language-esl/85304
Individual Book Exercise 4 on page 67
Collaborative Exercise 6 on page 67 about
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