There are a dog catch another dog. 錯在那裡?

There are a dog catch another dog.
第一個錯既地方就系 "are" 喇。應為 are 系用來形容複數既。 你應該用 is。第二﹐ 如果你用is / are 呢﹐ o甘你個動作應該有-ING尾。(例如﹕ is/ are playing, is/are watching, is/are catching)。
所以你個句應該改成:
There is a dog catching another dog.
or
There is a dog chasing after another dog.
=]

錯在 CHINGLISH。是由中文直譯，有隻狗捉另一隻狗，D GRAMMAR 完全無改，CATCH 是直譯捉。狗是不會捉狗，只會追的。

所以，不應用 There are。可改為：

A dog chased/was chasing after another dog.

"I'm glad I know how to climb a tree, 'cause if a dog chased after me I could climb up, and he couldn't get me. Dogs can't climb trees." "Cats can," said Sadie. "I saw our cat climb a tree once." "But cats don't chase after you," ...
www.online-literature.com/laura-hope/bunny-brown-and-his-sister-sue/22/ - 25k -

A dog was chasing after her and kept on barking while a child pointed at her and a woman was frightened with shock . It seemed that only a few people can see a transparent ghost walking the streets of Main . ...
z4.invisionfree.com/Neon_Quill/index.php?showtopic=33&st=30 - 124k -

要用 PAST TENSE， 因從你給的句子應是講一件事，不是習慣。如習慣可用 SIMPLE PRESENT TENSE。

A dog chases/is chasing after another dog.

When a dog is chasing after you, whistle for him. ---Ralph Waldo Emerson Today's begging is finished: at the crossroads I wander by the side of the Buddhist shrine Talking with some children. Last year a foolish monk. ...
www.newciv.org/nl/newslog.php/_v63/__cat/_c768/Inspiration - 17k

If a dog chases after a cat, and a child also runs, the dog will not know which is which and that might cause a problem. “People think a dog can be taught to behave like humans, but it’s not so,” says Fonseka. “That’s an important thing ...
thestar.com.my/lifestyle/story.asp?file=/2006/1/26/lifefocus/13160487&sec=lifefocus - 29k -

There is a dog catching another dog.

There is a dog catching another dog.

There is a dog catching another dog