When he is complete--when he really can talk English I rejoice in him.

When I object to him is when his English is worse than my French or German, and when he will, for his own educational purposes, insist, nevertheless, that the conversation shall be entirely in English.

I would he came to me some other time.

I would so much rather make it after dinner or, say, the next morning.

I hate giving lessons during meal times.
Besides, to a man with feeble digestion, this sort of thing can lead to trouble.