Example:The scientist from whom she heard never lost heart when he was in trouble.
Translation：那位给她来信的科学家在陷入困境时从不灰心.
可将上句中的heard改成其他能与from构成词组的动词.（但这类动词词组实在不怎么好找,因为要保持语句通顺.）
例如,break away from 意为“离弃,脱离关系”
she studied