Jawaban:

1.

(+) He can play piano.

(-) He can't play piano

(?) Can he play piano?

2.

(+) I can explain it to you.

(-) I can't explain it to you.

(?) Can I explain it to you?

3.

(+) My cat can jump as high as two meters.

(-) My cat can't jump as high as two meters.

(?) Can my cat jump as high as two meters?

4.

(+) You can come here every day.

(-) You can't come every day.

(?) Can you come here every day?

5.

(+) My father can rapair the broken chair.

(-) My father can't repair the broken chair.

(?) Can my father repair thebroken chair>

to be able to

1.

(+) I was able to finish my exam early yerterday.

(-) I wasn't able to finish my exam early yerterday.

(?) Was I able to finish my exam early yesterday?

2.

(+) He will be able to join you later this afternoon.

(-) He won't be able to join you later this afternoon.

(?) Will he be able to join you later this afternoon?

3.

(+) I am able to pay for my own education.

(-) I am not able to pay for my own edication.

(?) Am I able to pay for my own education?

4.

(+) She is able to raise the children by herself.

(-) She isn't able to raise the children by herself

(?) Is she able to rais ethe children by herself?

5.

(+) My sister is able to run five kilometers.

(-) My sister isn't able to run five kilometers.

(?) Is my sister able to run five kilometers?

Penjelasan:

Modal CAN dan adjective "TO BE ABLE TO" dipakai untuk menunjukkan KEMAMPUAN, KESANGGUPAN

Struktur kalimatnya adalah sbb:

CAN

(+) Subjek + CAN + Infinitive + objek dst

(-) Subjek + CAN NOT (biasa disingkat CAN'T) + infinitive + Objek dst

(?) CAN + subjek + infinitive + objek dst

TO BE ABLE TO

ABLE adalah sebuah kata sifat (Adjective) yang bermakna "SANGGUP"

Karena dia adalah adjective maka penggunaannya harus di sertai to be:

Contoh

I am able (Saya sanggup)

I am able to do it (Saya sanggup melakukan itu)

You are able to follow the lesson (kamu sanggup mengikuti pelajaran itu)

Struktur kalimat:

(+) Subjek + TO BE + ABLE + TO + Infinitive + objek dst

(-) Subjek + TO BE + NOT + ABLE + TO + Infinitive + objek dst

(?) TO BE + subjek + ABLE + TO + infinitive + objek dst?

Note: dalam rumus kalimat menurut sumber/buku lain mungkin disebutkan bukan infinitivetapiverb 1.

Infinitive memang mirip dengan verb1 tapi dalam hal ini infinitive tidak mengalami perubahan bentuk walaupun subjeknya He/She/It. Jadi verb nya tidak ditambah s di belakangnya walaupun subjeknya He/She/It.

Makanya sebenarnya lebih tepat disebut infinitive.

Semoga bermanfaat.