She also knew a few compound verbs, such as "put back", although linguists concluded that she was almost certainly treating them as single words in her vocabulary, and learned few stative verbs within the typical time frame of language acquisition.
Although linguists concluded that she was almost certainly treating them as single words in her vocabulary, and learned few stative verbs within the typical time frame of language acquisition. This was what she knew a few compound verbs. A few compound verbs were such as "put back".