1.

(+) We are working on the new show right now.
(-) We aren't working on the new show right now.
(?) Are you working on the new show right now?
2.

(+) I'm talking on the phone at the moment.
(-) I'm not talking on the phone at the moment.
(?) Are you talking on the phone at the moment?
3.

(+) He is running very fast.
(-) He isn't running so fast
(?) Is he running so fast?    
4.

(+) Julia is baking a chocolate cake at the moment.
(-) Julia isn't baking a chocolate cake at the moment.
(?) Is Julia baking a chocolate cake at the moment?
5.

(+) Tony and Kaity are helping the teacher right now
(-) Tony and Kaity aren't helping her teacher right now.
(?) Are Tony and Kaity helping the teacher right now?

ĐÁP ÁN VÀ GIẢI THÍCH CÁC BƯỚC:

1.

(-) We aren't working on the new show right now

(?) Are we working on the new show right now?

2.

(+) I'm taking on the phone at the moment.

(?) Am I taking on the phone at the moment?

3.

(+) He is running very fast.

(-) He isn't running very fast

4.

(-) Julia isn't baking a chocolate cake at the moment.

(?) Is Julia baking a chocolate cake at the moment?

5.

(+) Tony and Kity are helping the teacher right now.

(-) Tony and Kity aren't helping the teacher right now.

Giải thích:

Ta dùng thì HIỆN TẠI TIẾP DIỄN (PRESENT CONTINUOUS TENSE)

(+) I + AM 

     YOU / WE /THEY + ARE.        ⇒ + Ving

      HE / SHE / IT + IS

(-) I + AM 

     YOU / WE /THEY + ARE.        ⇒ Not + Ving

      HE / SHE / IT + IS

(?) AM +  I 

     ARE + YOU / WE /THEY         ⇒  + Ving?

     IS + HE / SHE / IT 

KHÔNG HIỂU CHỖ NÀO THÌ HỎI MÌNH Ạ.

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