Referring back


Sometimes the lecturer will refer back to a previous lecture or to an earlier part of the same lecture.

Phrases they could use include:

  • last/previous + lecture/time/week
  • remember/recall/remind
  • already + discussed/mentioned/talked about


  • What we talked about last time was the sort of qualitative effects, the qualitative version of the supply and demand model.
  • OK, this is the lecture on positive definite matrices. I made a start on those briefly in a previous lecture.
  • If you remember the first lecture I gave, we talked about the hierarchy of organization within ecological systems.
  • And you may remember that little movie I showed of a white blood cell that was trying to eat it.
  • And it was founded, as so many of these first colonies were, as a military camp. It was laid out as a castrum, as you’ll recall.
  • As I mentioned at the end of the last lecture, in 1637 Charles and Archbishop William Laud overreached themselves.
  • So this strand of DNA can be made into a double-stranded DNA by just using the kinds of enzymes that we’ve already talked about.
  • Now we’re doing a titration problem, but you already know how to do this problem because we’ve seen a weak acid in water problem before.
  • So, in all of that, as I described last week, the one political moment which might have produced a broadly acceptable settlement had been in 1647 ...
  • I suppose in the last lecture it’s very appropriate to go back to this particular aerial view, to remind ourselves of everything we’ve covered in the centre of Rome.
  • And I just want to remind you of the tree of life that I showed you last time where we can really explore the relationships amongst all living organisms.