Such humble talents as God has given me I will endeavour to put to their greatest use; if I am able to amuse, I will try to benefit too; and when I feel it my duty to speak an unpalatable truth, with the help of God, I will speak it, though it be to the prejudice of my name and to the detriment of my reader's immediate pleasure as well as my own. (Anne Brontё, The Tenant of Wildfell Hall)上帝赐了我区区一点才能，我一定努力好好利用；如果我能够使人开心，我也会设法做到；而如果我觉得自己有义务把不合口味的真话说出来，哪怕是有损于我自己的名声，有损于读者眼前的愉快心情和我自己的愉快心情，我也一定会说出来。

为什么直接是be？是什么语法？