用that 的句子 的structure

1: 我想問that后面係咪一定要跟sbj – verb
唔係
They have got the machine that prints names on the badges.
(that後面沒有 subject, 有 verb “prints” )

2: 咁that后面係咪唔用得verb?
唔係. 可以用得verb 或不用 verb
I have got that pain in my leg. (that後面沒有用 verb)
The fish is about that long. (that後面沒有用 verb)

3: 如果唔用, 我將verb轉gerund得唔得?
可以將verb轉gerund
I enjoyed that hiking last week.
(hike 轉 hiking. Hiking is a gerund which is used as a noun)

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你要知道that的詞性,
That can be (1) determiner (2) pronoun (3) conjunction (4) adverb.

I have got that pain in my leg. (determiner)
That dress of hers is too long. (determiner)

They have got the machine that prints names on the badges. (relative pronoun)
This is the train that stops at Shatin. (pronoun)
(that後面沒有 subject, 但有 verb)

It is a song that my mother taught me. (relative pronoun)
The people that I spoke to were very friendly. (relative pronoun)
(that後面有 subject 和 verb)

What can I do about that? (pronoun)

I didn’t know that she was married. (conjunction)
It is so dark that I couldn’t see anything. (conjunction)

The fish is about that long. (adverb)
She is too young to walk that far. (adverb)

1係+subject/n
2係唔用得
3得,gerund中文叫動名詞=v→n