Is everybody having great time ?(改错）
Thanks for your helping with my English .(改错）
One people is taking a photo next to the house .(改错）

Turn left on the First Avenue .(改为否定句）
Let's play computer games .(改为否定句）

Tom is ___ but Jill is ___ .
A.English,American B.an English,American
C.an English,an American D.English,a American

John ,can you ___ the picture in English ?
A.say B.tell C.talk about D.speak

最好能给我讲解一下

Is everybody having A great time ?
（have a good/great time: 玩得開心）

Thanks for helping with my English （要去掉your)

One PERSON is taking a photo next to the house
(people 是表復數概念的集合名詞，這裏是一個人，要用person)

Turn left on the First Avenue .(改为否定句）=> Don't turn left on the first avenue.

Let's play computer games .(改为否定句）=> Let's not play computer games.
(祈使句Let's的否定形式是：Let's not + 動原形）

C.an English,an American （儅后面的詞的第一個音節是元音發音時，a 要變爲 an )

C: talk about 談論。。
John,你能用英文講一下這個照片嗎？