By

Conjunció subordinada

  observing

Verb

  these

Determinador

  subjects

substantiu

,  Johnson

Nom propi

  helped

Verb

  Masters

Nom propi

  identify

Verb

  the

Determinador

  four

Numeral

  stages

substantiu

  of

Adposició

  sexual

👉👌

Adjectiu

  response

substantiu

.

By observing these subjects, Johnson helped Masters identify the four stages of sexual response.

By observing these subjects, Johnson helped Masters identify the four stages of sexual response.