1) tom have eaten in large restaurant

have => has ( S là tên riêng (số ít)

2) he was not had dinner last night

was not => didn't (quá khứ đơn - V thường )

3)   i hasn't seen him since last month

hasn't =>. haven't

4) he has lived in ha noi in 1980

has lived => lived ( quá khứ đơn - in 1980)

5) he has given a gift for me yeterday

has given => gave ( quá khứ đơn - yesterday)

1. have = > has ( chủ ngữ là ngôi thứ ba số ít )

2. was not had = > didn't have ( Dùng trợ động từ didn't do chia ở quá khứ )

3. hasn't = > haven't ( Chủ ngữ là ngôi thứ nhất )

4. has lived = > lived ( Có in 1980 là dấu hiệu nhận biết của thì quá khứ đơn )

5. has given = > gave ( Chia ở thì quá khứ đơn có yesterday )