Common mistakes are mistakes that people make all the time. There are several common mistakes in English. The most common among them are given below.
So do I, neither did I
The structure ‘so + auxiliary + subject’ is used to add a positive remark to a positive statement.
My father likes theater. So do I. (= Both my father and me like theater.)
‘I am interested in the supernatural.’ ‘So am I.’
My sister wants to be a pilot. So do I. (= Both of us want to be pilots.)
Neither do I
The structure ‘neither + auxiliary verb + subject’ is used to add a negative remark to a negative statement.
James didn’t come. Neither did Peter.
My mother doesn’t eat meat. Neither do I.
‘I haven’t seen a good movie for a long time.’ ‘Neither have I.’
He won’t be able to attend the conference. Neither will I.
Such and so
Such is used before a noun (with or without an adjective).
She is such a beautiful girl.
So is used before an adjective.
She is so beautiful.
Such in ‘such…that’ is followed by a noun phrase or its equivalent.
It was such a cold afternoon that we didn’t go out.
So in ‘so…that’ is followed by an adjective.
It was so cold that we didn’t go out.