Englishfor English speakers
test
Noun
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A test is writing that many learners do in a room at the same time so that people are able to see how much knowledge the learners have.
I'm happy because I got a high mark on the test.
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A test is something someone does to see if something works.
The person did a good test of the machine by pushing all the buttons and watching the machine.
test
Verb
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The action of testing; to try something out to see whether it works.
He tested the software many times.
basis
Noun
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The basis of something, is the main ideas or parts that it is built on.
On the basis of the information available, we have decided to cancel the project.
There is no basis for believing that he was killed.
Her experiences in Cambodia formed the basis for her first book.
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If something happens on a regular/daily/weekly etc. basis, it happens regularly, daily, etc.
The problems are now happening on a very regular basis.
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If we are on a first-name basis, we use first names when speaking to each other.
Josie Parkinson and I are on a first-name basis. I call her "Josie" when I see her.