368. His first lecture was delivered on Nov 4, 1915, and it explained his new approach, though he admitted he did not yet have the precise mathematical formulation of it.
雖然他承認他尚未有精確的數學公式，但他還是在1915年11月4日發表了他的第一個演講，并且解釋了他的新方法。

六級詞匯講解:
deliver本義為“交付，遞送”，在句中意為“發言，發表”。preclse意為“精確的，準確的”。though意為“盡管；雖然”，引導讓步狀語從句。除此之外，讓步狀語從句的引導詞還有although和as。

英語六級考點歸納:
although、though和as三者的聯系與區別如下：

although和though引導的從句放在主句前后均可，有時還可放在句中。如：
1) Although many difficulties are still ahead, we are determined to make greater achievements.
盡管前面的道路還充滿了坎坷，但是，我們決心要取得更大的成就。
2) He often helps me with my English (al)though he is qrute busy.
盡管他很忙，但是還常常幫我學英語。

although和though引導的從句不能與but或however連用，但可與yet或still連用。如：
Though he was old, yet he worked hard.
盡管他上了年紀，但是工作依然很努力。

though有時指假設的情況，從句用虛擬語氣；although卻不能這樣用。如：
1) Einstein cared liffle for money，though he could have been very rich.
盡管愛因斯坦本可以成為非常富有的人，但他對金錢卻不感興趣。
2) He wiU never do such a th:ing though he (should) be forced to.
即使強迫他，他也決不會干這樣的事。

though引導的從句若是系表結構，且從句的主語與主句的主語一致時，可以省略從句主語和be動詞。如：
Though alone，he is happy.
雖然他獨自一人，卻很幸福。
(完整形式是Though he is alone, he is happy.)

as和though引導的讓步從句都可以將表語、狀語或部分謂語提前。如：
Try hard as he will,he never seems able to finish the work before Friday.
盡管他會很努力，但是看起來他并不能在周五前完成此項工作。