My mother was the most warm hearted person I have ever known => I have...... The police started looking for him two months ago => For two months now the.....

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` 1. ` I have never known a more warm-hearted person than my mother.

` @ ` SS hơn:

` -> ` S + be / V + more adj than + S

` 2. ` For two months now, the police have been looking for him.

` -> ` For + time + ... + now, S + have/has + V-ing