英語：準動詞の問題を教えてください

急ぎのお願いで申し訳ありませんが、ご教示いただけませんでしょうか。
なぜその答えになるのか、簡単でよいので理由も書いていただけると大変助かります。
全て言い換えです。

(1) It seems that something is burning in the oven.

Something seems ( ) ( ) ( ) in the oven.

(2) I want them to do this work as soon as possible.

I want this work ( ) ( ) ( ) as soon as possible.

(3) Bill was very proud that he had won the race

Bill was very proud of ( ) ( ) the race.

(4) When I was making a speech, I was afraid that I might be laughed at.

When I was making a speech, I was afraid of ( ) ( ) ( ).

No.2 ベストアンサー 回答者： marbleshit 回答日時： 2017/05/31 18:04

(1) It seems that something is burning in the oven.

Something seems (to) (be) (burning) in the oven.

* seem to 不定詞を用いた単文への変換

(2) I want them to do this work as soon as possible.
I want this work (to) (be) (done) as soon as possible.

* this work を目的語に据えた受身の構文

(3) Bill was very proud that he had won the race
Bill was very proud of (having) (won) the race.

* 過去完了時制の節を動名詞句に変換

(4) When I was making a speech, I was afraid that I might be laughed at.
When I was making a speech, I was afraid of (being) (laughed) (at).

* 受動態動名詞句への変換

No.1 回答者： wind-sky-wind 回答日時： 2017/05/31 18:02

to be burning

to be done
having won
being laughed at