Englishfor English speakers
ancestor
Noun
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An ancestor is a person from whom one is descended refShorter Oxford English Dictionary, p63; The Pocket Oxford English Dictionary, 9th ed, ed. Oxford; New York: Oxford University Press, 2002, p. 29). Usually it refers to a remote person, rather than the immediate parents or grandparents (Concise Oxford Dictionary, p45, gives "esp. remote")/ref. A very similar word is forebear.
We get our customs from our ancestors.
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Entire species of plants or animals may have ancestor species from which they evolution.
It is thought that an extinct group of apes was the ancestor of the human race.
object
Noun
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An object is a thing that you can touch, but it is not alive.
We don't know what killed him, but it was a smooth, heavy object.
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The object of an action or plan is the goal or the reason for it.
The object of soccer is to kick the ball into the other team's net.
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In English grammar, the object of a sentence is a noun or noun phrase that usually comes after the verb. This noun is usually the thing that is receiving the action.
In the sentence, "Yoko ate the bread.", bread is the object.
object
Verb
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If you object to something, you don't agree with it.
Most people will object to being asked to work too much.