The proton has a similar mass to that of a neutron.

[Jessica725]

1.The proyon has a similar mass to that of a neutron.
2.The emotions in the poems are those of loss and grief.
Can anyone tell me how to use "that of " and "those of " in the two sentences above? Thanks.

 

[Skrej]

I'm not sure what you're asking. Those sentences contain examples of the phrases you're asking about.

I think you also have a typo - it should be 'proton' instead of 'proyon'.

Where did you get these examples?

 

[Jessica725]

I'm not sure what you're asking. Those sentences contain examples of the phrases you're asking about.

I think you also have a typo - it should be 'proton' instead of 'proyon'.

Where did you get these examples?

First of all, thanks for reply.
The problem I have is that I don't quite understand the grammarical uses of 'that of' and 'those of' in both sentences metioned above.

 

[Rover_KE]

... I don't quite understand the grammatical uses of 'that of' and 'those of' in the sentences mentioned above.

I have changed your thread title. 'English grammar' was useless as a title – most of the questions here are about that.

 

[jutfrank]

The emotions in the poems are those of loss and grief.

those = The emotions

 

[Jessica725]

I have changed your thread title. 'English grammar' was useless as a title – most of the questions here are about that.

thanks for correcting my mistakes.

 

[Rover_KE]

Thanks for correcting my mistakes.

There’s another one.

 

[Tdol]

And in the first it means similar to the mass a neutron has.