To make adjectives negative, we use different prefixes like un-, in-, dis-, im-, il-, ir-, and a-. These prefixes are added to words to express the opposite or negative form.
Here’s how the given adjectives can be converted into their negative forms:
ambitious becomes unambitious
conscious becomes unconscious
accurate becomes inaccurate
mortal becomes immortal
replaceable becomes irreplaceable
relevant becomes irrelevant
satisfied becomes dissatisfied
symmetrical becomes asymmetrical
political becomes apolitical
Now let's complete the sentences using the negative forms of the adjectives:
a. Coral reefs are irreplaceable . Once they are destroyed, they are gone forever.
b. If the patient remains unconscious , he should be put in the recovery position.
c. Some students do not see the point of studying history as they find it irrelevant to the modern world.
d. The two students' background was not dissimilar as they both came from working-class families.
Understanding when and how to use these prefixes can help in forming correct grammatical structures and conveying the intended meaning in writing and conversation.