以下几种情况也多用一般现在时 a. 在if, unless等引导的条件状语从句中，when, until, as
soon as等引导的时间状语从句中，当主句是一般将来 时，从句通常用一般现在时表示将来；
eg: We’ll have a sports meeting if it doesn’t rain next
时态
标志词
一般将来时 tomorrow, the day after tomorrow next week/ month
过去将来时 主要用于宾语从句中
现在完成时 already, just, yet, ever, never, in the past 3 years, over the years since+时间点/过去时态的句子, for+时间段
Saturday. b.宾语从句部分若是表示客观真理，不管主句是何时态，
从句都要用一般现在时。
eg: My mother told me that the sun rises in the east.
时态
标志词
一般现在时 频率副词(often, usually, sometimes every day, once a week, on Sundays
一般过去时
yesterday, three days ago,
last night/week,just now…
现在进行时 now, at this time, at the moment, these days, look, listen等
过去进行时 at that time, at this time yesterday,
few years. 5. When my father came in, I w__a_s_w_a_t_c_h_in_g_(watch) TV. 6. He said he _w_o_u_ld__re_t_u_r_n_(return) the next week. 7. By the time I got outside, the bus _h_a_d_l_e_ft_(leave)
