entry visa 和 visit pass是不同的。前者是批准你入境，后者是让你逗留（stay）。信上不是有这么一句: the controller of immigration has approved a single-journey entry visa for this application. 就是说已经给你批准了一个entry visa（入境签证）。你看看信上有没有说怎么用这个签证。

2年前的信是这么说的:

in addition, a single-journey visa has also been approved and is endorsed on this letter. should the single journey visa be used for entry into singapore, a fee will be charged.....(略去些废话）To use this visa for entry, please inform the aboved named person to present the orignal in-priciple letter to the duty officer at the immigration checkpoint.....

看懂了吧？