Jawaban:

1. Simple present tense

(?) are your parents in the office?

(+) your parents are in the office.

(-) your parents aren't in the office.

2. Simple present tense

(+) the company gives free tickets for loyal customer.

(-) the company doesn't give free tickets for loyal customer.

(?) does the company give free tickets for loyal customer?

3. Present continuous tense

(-) i'm not leaving for Vienna tomorrow morning.

(+) I'm leaving for Vienna tomorrow morning.

(?) am I leaving for Vienna tomorrow morning?

4. Simple past tense

(?) was the case hard to solve?

(+) the case was hard to solve.

(-) the case wasn't hard to solve.

Penjelasan :

A. Simple present tense form :

• kalimat verbal

(+) S + verb-1 + O

(-) S + do/does + not + verb-1 + O

(?) do/does + S + verb-1 + O

Contoh :

• (+) She teaches English everyday.
• (-) She doesn't teach English everyday.
• (?) Does she teach English everyday?

• kalimat non-verbal

(+) S + to be (is/am/are) + non-verb

(-) S + to be + not + non-verb

(?) to be + S + non-verb

Contoh :

• (+) He is my brother.
• (-) He isn't my brother.
• Is he my brother?

B. Present continuous tense form :

(+) S + to be (is/am/are) + verb-ing + O

(-) S + to be + not + verb-ing + O

(?) to be + S + verb-ing + O

Contoh :

• (+) I am studying English at the moment.
• (-) I am not studying English at the moment.
• (?) A m I studying English at the moment?

C. Simple past tense form :

• kalimat verbal

(+) S + verb-2 + O

(-) S + did + not + verb-1 + O

(?) Did + S + verb-1 + O

Contoh :

• (+) She wrote a letter.
• (-) She didn't write a letter.
• (?) Did she write a letter?

• kalimat non-verbal

(+) S + to be (was/were) + non-verb

(-) S + to be + not + non-verb

(?) To be + S + non-verb

Contoh :

• (+) I was there.
• (-) I wasn't there.
• (?) Was I there?