Jawaban:

Tenses:

a. (+) He always helps his mother.

(-) He does not always help his Mother.

(?) Does he always help his Mother?

b. (+) We were at the beach three weeks ago.

(-) We were not at the beach three weeks ago.

(?) Were we at the beach three weeks ago?

c. (+) You are reading a book.​

(-) You are not reading a book.

(?) Are you reading a book?

Penjelasan:

Jawaban dicetak tebal dan merupakan materi pembelajaran Tenses (kala) yaitu Simple Present Tense karena menjelaskan aktivitas kegiatan berulang sehari-hari, Simple Past Tense karena menjelaskan aktivitas kegiatan di masa lampau dan Present Continuous Tense karena menjelaskan aktivitas kegiatan yang sedang dilakukan dalam Bahasa Inggris.

Simple Past Tense

Nominal: (+) Subject + to be (was/were) + adjective/adverb (yesterday / last week)

(-) Subject + was/were + not + adjective/adverb + adverb of time (yesterday / last week)

(?) Was/were + subject + adjective/adverb + adverb of time (yesterday / last week)?

Simple Present Tense:

Verbal: (+) Subject + Verb-1 S/ES + Object

(-) Subject + Do/Does + not + Verb-1 + Object

(?) Do/Does + Subject + Verb-1 + Object + ?

Present Continuous Tense:

(+) Subject + Tobe (is/am/are) + Verb-ing + Adverb of time (Now/today)

(-) Subejct + Tobe (is/am/are) + not + Verb-ing + Adverb of time (Now/today)

(?) Tobe (is/am/are) + Subject + Verb-ing + Adverb of time (Now/today)?

Terkadang Adverb of Time juga disebut sebagai Time Signal.

Semoga membantu ya.