The operator is the first auxiliary of the finite verb phrase.
Rose had been looking for a way out of her engagement.
The operator can be identified by asking a tag question.
Rose's mother wanted her to marry someone very wealthy,
didn't she?
The operator is used to create interrogative and
negative sentences.
Would Rose and Jack be together for the rest of their lives?
Does the Titanic have enough lifeboats?
The
Titanic doesn't have enough lifeboats.
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