HELPP... 1. What is the difference between 'for example' and 'such as'? 2. When do we use 'for example'?

Use For example, at the start of a sentence.
- Use such as in the middle of a sentence.

Compare these examples:

Children should eat less junk food. For example,they should avoid eating burgers and chips.

Children should avoid eating junk food such asburgers and chips.

Notice that 'For example' is followed by a comma and a full sentence. 'Such as' is in the middle of the sentence, followed by two nouns. You can use 'For instance' instead of 'For example'. You can use 'like' instead of 'such as'