請問英文句子的用法

Question

Have you been in a toy store _____ this morning?
答案是since那可以用all this morning嗎？

He is going to be in　a surfing competition.的　be 是什麼意思？

Answer 1

其實, Have you been in a toy store this morning. 這樣子就可以的.
Have you been in a toy store since this morning, 當然是對.
用 "all this morning" 就有點溢詞, 不太恰當.

"He is going to be in a surfing competition." 的 "be" 是 "參加", "出現" 的意思.

2006-12-13 18:16:56 補充：
"其實, Have you been in a toy store this morning. 這樣子就可以的. " 我的意思是 這句話就是 "你今天早上有去過玩具店嗎?", 已然是一個完整的意思也是完整的句子.

2006-12-13 18:17:25 補充：
而我說 "Have you been in a toy store since this morning, 當然是對." 意思是 這句話是 "你自今天早上以來, 有否去過玩具店?". 可能是問這句話的時間已是下午或晚上. 雖然意思上與上一句有些不同, 但是也是個完整的意思及完整的句子. 但是切記, 它並沒有 "你今天整個早上都在玩具店裡??" 的意思. 因為句子文字的意思只是問有否去過, 而完全沒有問是否 "都" 在玩具店裡.

Answer 2

到下面的網址看看吧

▶▶http://qoozoo201409150.pixnet.net/blog

Answer 3

Have you been in a toy store since this morning?
跟
Have you been in a toy store this morning?
兩句的意思是有差的....


Have you been in a toy store since this morning? (比較像: 你今天整個早上都在玩具店裡??!!)
Have you been in a toy store this morning? (你今天早上有進玩具店嗎?)


He is going to be in a surfing competition.
與其問 be 是什麼意思... 應該要問 going to be = 將會在
他將會在一個衝浪比賽裡