10月21日英语

The lecture will be held at 2:00p.m. on October 21.lecture/speech 都有演讲的意思。如果是未来发生的事，则用will be一般讲来时，已经发生过的就把“will be”改成“was”，没有说明是否发生过也可以用把“will be”改成“is”。在10月21日：on October 21.(或者21写成21th，推荐答案的那位兄台恐怕把21号看成2号了)

the 21th,Oct或者Oct，21 10.21.也可以的。

October 21/21st(读作：October twenty-first); 21/21st October; the twenty-first/21st of October 10月21日

Speaking in October 21st 2 p.m.!

There is a speech at two p.m,21st,October.The speech will be held at two p.m,21st,October

October twenty firstOctober 21st