过去进行式 Past Continuous Tense ; preterite progressive

过去进行时的形式 Forms of the Past Progressive

去完成进行式 Past Perfect Progressive Tense ; past perfect continuous tense

过去完成进行式 past perfect continuous ; preterite perfect progressive

过去将来进行式 future preterite progressive ; past future continuous

过去将来完成进行式 future preterite perfect progressive ; past future perfect continuous