1. One, ones, this/there that, those
• We use one or ones instead of repeating a noun or
nouns.
• We use this and these to mention things that are near us
• We use that and those for things that are further away.
Would you like this one or that one?
Would you like these ones or those one?

2. Present passive vs. past passive
We use present passive forms when when we talk about
what happens to people or things, not what they do
themselves.
We use past passive forms when we talk about what
happened to people or things, not what they did themselves.

3. Like vs. would like.
We use like+ - ing form to talk about enjoyment or
general interest.
We use would like to + infinitive to talk about
preferences.