" A Thai Chinese I know .
 
.
 
.
 
" ( 6 ) ; " On my visits to the United States and Europe .
 
.
 
.
 
" ( 6 ) ; " When my wife was teaching in Taiwan .
 
.
 
.
 
" ( 7 ) ; " Before I traveled abroad .
 
.
 
.
 
" ( 9 ) ; " In Taipei once .
 
.
 
.
 
" ( 10 ) ; " Two Cantonese men .
 
.
 
.
 
" ( 11 ) ; " On my last visit to the United States .
 
.
 
.
 
" ( 12 ) ; " To cite another example .
 
.
 
.
 
" ( 13 ) ; " Once, many years ago .
 
.
 
.
 
" ( 14 ) ; " A friend who used to write .
 
.
 
.
 
" ( 15 ) ; " To give another example .
 
.
 
.
 
" ( 16 ) ; " I was once visiting a British professor .
 
.
 
.
 
" ( 16 ) ; " Several years ago .
 
.
 
.
 
" ( 18 ) ; " I once saw a film .
 
.
 
.
 
" ( 19 ) ; " Here