①A selfie stick is an extendable metal stick which has a handle at one end
[主语] [be动词作谓语] [宾语] [宾语从句解释说明先行词也即是
ang space for your smartphone at the other.
前面的那个stick]
句型：主谓宾+宾从
②Another unexpected problem with the two types of English happened to me when I was a
[主语] [with结构作problem的定语] [谓语] [宾语] [时间状语
teacher.
从句]
句型：主谓宾+时间状语从句
Reread what you have written with fresh eyes and see if you still think it truly
[动词原形] [宾语从句] [连接词] [动词原形] [宾语从句]
reflects.
句型：and 连接的两个并列的祈使句,其中祈使句中都用了从句来充当宾语.
PS:因为不知道lz是哪个版本的说所以很难说那个是重点单词