these的單數(shù)形式為this。these可作代詞和形容詞，含義為“這些”、“他們”、“一些”、“這些的”，可用于名詞詞組前，指代已提及的人或事物；this可作代詞、副詞和形容詞，含義為“這”、“這個(gè)”、“這么”、“即將來到的”。
一、these的含義及用法
these主要用作代詞和形容詞，意為些;這些，他們；一些；這些(的)。
例句：Teachers are up against some major problems these days.
老師們最近面臨著一些重大問題。
Everyone experiences these problems at some time in their lives.
每個(gè)人在人生的某個(gè)階段都會(huì)經(jīng)歷這些問題。
Living in Bootham these days can be depressing...
如今住在布薩姆會(huì)讓人心情抑郁。
These are my children.
這些都是我的孩子。
I was on my own and these fellows came along towards me...
我正一個(gè)人走著，一些家伙朝我走過來。
二、this的含義及用法
this可作代詞、副詞和形容詞，意為這個(gè);這樣;這么；這;即將來到的;今…。
例句：How long have you been living in this country?
你在這個(gè)國家居住多久啦？
I didn't think we'd get this far.
我未曾想到我們會(huì)走得這么遠(yuǎn)。
I thought, this is why I've travelled thousands of miles...
我想，這就是我為何不遠(yuǎn)千里趕來的原因。
They'd said the wound was only about this big you see and he showed me with his fingers.
他們說傷口只有這么一點(diǎn)大，他還用手指比劃給我看。
As you're aware, this is not a new problem.
正如你所了解的，這不是一個(gè)新問題。
Teachers are up against some major problems these days.
老師們最近面臨著一些重大問題。
Everyone experiences these problems at some time in their lives.
每個(gè)人在人生的某個(gè)階段都會(huì)經(jīng)歷這些問題。
