Explanation of attributive clause: What can be used as a guide when the clause lacks a subject?

1. When the antecedent is anything, nothing (except something), all, nothing, worry, few, some and other pronouns, or when the antecedent is modified by every, any, all, some, no, few, worry, many pronouns. For example:

Did you write down everything Mr. Li said? Did you write down everything Miss Li said?

For him, nothing in the world seems impossible. In his view, nothing in the world is impossible.

All that can be done has been done.

I can hardly do anything for you. I can't do anything for you.

He stayed in the library to look for any information they needed. He stayed in the library looking for the information he needed.

Note: when the antecedent refers to a person, you can occasionally use the relative pronoun who, such as:

No responsible person would do such a thing. No responsible person would do such a thing.

All the guests invited to her wedding are important people. All the guests invited to her wedding are important people.

2. When the antecedent is modified by ordinal number. For example:

The first place they visited in London was Big Ben. The first place they visited in London was Big Ben.

3. When the antecedent is modified by the superlative adjective. For example:

This is the best film I have ever seen. This is the best film I have ever seen.

4. When the antecedent is very and uniquely modified. For example:

This is just the dictionary I want to buy. This is just the dictionary I want to buy.