Jawaban:

1. (+) You’re working hard today.

(-) You are not working hard today.

2. (+) An air steward looks after the passengers on the plane.

(-) An air steward does not look after the passengers on the plane.

3. (+) Ann speaks German very well.

(-) Ann does not speak German very well.

4. (+) My parents live in a very small flat.

(-) My parents do not live in a very small flat.

5. (+) I met Mr. Christiansen in 1998.

(-) I did not meet Mr. Christiansen in 1998.

6. (+) Jane was waiting for me.

(-) Jane was not waiting for me.

7. (+) Mike has lost his key.

(-) Mike has not lost his key.

8. (+) Jenny is a student at university.

(-) Jenny is not a student at university.

9. (+) Vegetarians eat meat.

(-) Vegetarians do not eat meat.

10. (+) Yesterday I walked to work.

(-) Yesterday I did not walk to work.

11. (+) She’s in a meeting now.​

(-) She is not in a meeting now.

Penjelasan:

Kalimat kalimat di atas adalah termasuk bentuk kalimat Simple Present Tense, Present Continuous Tense, Simple Past Tense, Present Perfect Tense.

Rumus Simple Past Tense:

Kalimat Verbal Positif:

(+)· Subject + verb 2 + object + adverb of time (yesterday / last week)

(+) We attended the festival last week

Kalimat Nominal Positif:

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

(+) She was absent yesterday

Kalimat Verbal Negatif:

(-) Subject + did not + Verb 1 + object + adverb of time (yesterday / last week)

(-) We did not attend the festival last week

Kalimat Nominal Negatif:

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

(-) She was not absent yesterday

Kalimat Verbal Interogatif:

(?) Did + subject + Verb 1 + object + adverb of time (yesterday / last week)?

(?) Did we attend the festival last week?

Kalimat Nominal Interogatif:

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

(?) Was she absent yesterday?

Rumus Simple Present Tense:

1. Kalimat Verbal Simple Present Tense:

(+) I eat cheese every morning.

(-) I do not eat cheese every morning.

(?) Do I eat cheese every morning? / Do you eat cheese every morning?

2. Kalimat Nominal Simple Present Tense:

(+) We are students.

(-) We are not students.

(?) Are we students?

Penjelasan:

Rumus Simple Present Tense:

Kalimat Positive (+)  :

- Verbal     :  Subject + Verb1/Verb1+s/es + Object + adverb of time (every day / every morning)

- Nominal  :  Subject + Tobe (am, is are) + Object

Kalimat Negatif (-)    :

- Verbal     :  Subject + do/does not +Verb1 + Object + adverb of time (every day / every morning)

- Nominal  :  Subject + Tobe (am, is are) +NOT + Object

Kalimat Interrogative (?)  :

- Verbal    :  Do/Does + Subject + Verb1 + Object + ?

- Nominal :  Tobe (am, is are) + Subject + Object + ?

Jawaban di atas mengikuti Formula kalimat Verbal dan untuk bentuk kalimat verbal negatif Auxiliary Verbs seperti kata Do not dan Does not dalam bentuk negatif bisa disingkat menjadi bentuk Contraction forms yaitu: Don't dan Doesn't.

Kalimat Nominal contoh lainnya:

(+) We are doctors.

(-) We are not doctors.

(?) Are we doctors?

Dalam kalimat nominal, bentuk kata kerja To be (is / am / are) dalam bentuk negatif is not dan are not juga bisa disingkat menjadi bentuk Contraction forms yaitu: isn't dan aren't namun am not tidak bisa disingkat.

Rumus Present Continuous Tense:

A. Positif : subject + to be (am, is, are) + Verb – ing + object + adverb of time (Now / today)

Contoh : I am watching TV now.

B. Negatif : subject + to be + not + verb – ing + object + adverb of time (Now / today)

Contoh : Mr. Bean is not going to Jakarta. atau Mr. Bean isn’t going to Jakarta.

C. Interogatif  : to be + subject + verb – ing + object + Adverb of time (Now / today)

Contoh : Is Mr. Bean going to Jakarta now?

Rumus Present Perfect Tense:

Present perfect tense mengacu pada tindakan atau keadaan yang terjadi pada waktu yang tidak ditentukan di masa lalu (misalnya, kita telah berbicara sebelumnya) atau dimulai di masa lalu dan berlanjut hingga saat ini (misalnya, dia (pria) sudah tinggal di Bandung selama 10 tahun).

Tense ini dibentuk oleh have / has + the past participle (Verb-3)

(+) I have eaten. = Subject + Have / Has + Verb-3

(-) I have not eaten. = Subject + Have / Has + not + Verb-3

(?) Have I eaten? = Have / Has + Subject + Verb-3?

Semoga membantu ya.