10.84 USAGE NOTE

Prepositional phrases can sometimes be used to introduce a new topic or a different aspect of the same topic. 'As to' or 'as for' can be used at the beginning of a sentence to introduce a slightly different topic.

• As to what actually transpired at the headquarters, there are many differing accounts.
• We will continue to expand our economy. As for the US, we will ask that they take steps to reduce their budget deficit.

'With' and 'in the case of' can be used to mention another thing that is involved in a type of situation that was previously mentioned.

• With goats, for example, mother and infant form a close bond in the first five minutes of a kid's life.
• The changes will be even more striking and effective in the case of teaching than in medicine.